Home / 31,210.68-43,062.06-18,630.84

Finding the Fourth Proportional to 31,210.68, 43,062.06 and 18,630.84

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Solution

The fourth proportional to 31,210.68, 43,062.06 and 18,630.84 is: 25,705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.68 : 43,062.06 = 18,630.84 : x
  2. Step 2: Convert to fraction form
    31,210.68/43,062.06 = 18,630.84/x
  3. Step 3: Cross multiply
    31,210.68x = 43,062.06 × 18,630.84
  4. Step 4: Simplify right side
    31,210.68x = 802,282,349.93
  5. Step 5: Solve for x
    x = 802,282,349.93/31,210.68
  6. Step 6: Final answer
    x = 25,705.38

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Half scale
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Double scale
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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.