Home / 31,432.08-43,385.46-18,694.23

Finding the Fourth Proportional to 31,432.08, 43,385.46 and 18,694.23

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Solution

The fourth proportional to 31,432.08, 43,385.46 and 18,694.23 is: 25,803.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,432.08 : 43,385.46 = 18,694.23 : x
  2. Step 2: Convert to fraction form
    31,432.08/43,385.46 = 18,694.23/x
  3. Step 3: Cross multiply
    31,432.08x = 43,385.46 × 18,694.23
  4. Step 4: Simplify right side
    31,432.08x = 811,057,767.90
  5. Step 5: Solve for x
    x = 811,057,767.90/31,432.08
  6. Step 6: Final answer
    x = 25,803.50

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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.