Home / 31,025.57-42,816.36-16,878.92

Finding the Fourth Proportional to 31,025.57, 42,816.36 and 16,878.92

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Solution

The fourth proportional to 31,025.57, 42,816.36 and 16,878.92 is: 23,293.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.57 : 42,816.36 = 16,878.92 : x
  2. Step 2: Convert to fraction form
    31,025.57/42,816.36 = 16,878.92/x
  3. Step 3: Cross multiply
    31,025.57x = 42,816.36 × 16,878.92
  4. Step 4: Simplify right side
    31,025.57x = 722,693,915.13
  5. Step 5: Solve for x
    x = 722,693,915.13/31,025.57
  6. Step 6: Final answer
    x = 23,293.49

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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.