Home / 31,331.81-43,240.18-17,902.76

Finding the Fourth Proportional to 31,331.81, 43,240.18 and 17,902.76

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Solution

The fourth proportional to 31,331.81, 43,240.18 and 17,902.76 is: 24,707.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.81 : 43,240.18 = 17,902.76 : x
  2. Step 2: Convert to fraction form
    31,331.81/43,240.18 = 17,902.76/x
  3. Step 3: Cross multiply
    31,331.81x = 43,240.18 × 17,902.76
  4. Step 4: Simplify right side
    31,331.81x = 774,118,519.93
  5. Step 5: Solve for x
    x = 774,118,519.93/31,331.81
  6. Step 6: Final answer
    x = 24,707.11

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Find fourth proportional to 15,665.91, 21,620.09 and 8,951.38
Half scale
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Double scale
Find fourth proportional to 31,332.81, 43,241.56 and 17,903.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.