Home / 31,670.56-43,703.58-18,240.76

Finding the Fourth Proportional to 31,670.56, 43,703.58 and 18,240.76

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Solution

The fourth proportional to 31,670.56, 43,703.58 and 18,240.76 is: 25,171.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,670.56 : 43,703.58 = 18,240.76 : x
  2. Step 2: Convert to fraction form
    31,670.56/43,703.58 = 18,240.76/x
  3. Step 3: Cross multiply
    31,670.56x = 43,703.58 × 18,240.76
  4. Step 4: Simplify right side
    31,670.56x = 797,186,513.92
  5. Step 5: Solve for x
    x = 797,186,513.92/31,670.56
  6. Step 6: Final answer
    x = 25,171.22

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Half scale
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Double scale
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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.