Home / 31,004.97-42,787.40-16,857.91

Finding the Fourth Proportional to 31,004.97, 42,787.40 and 16,857.91

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Solution

The fourth proportional to 31,004.97, 42,787.40 and 16,857.91 is: 23,264.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004.97 : 42,787.40 = 16,857.91 : x
  2. Step 2: Convert to fraction form
    31,004.97/42,787.40 = 16,857.91/x
  3. Step 3: Cross multiply
    31,004.97x = 42,787.40 × 16,857.91
  4. Step 4: Simplify right side
    31,004.97x = 721,306,138.33
  5. Step 5: Solve for x
    x = 721,306,138.33/31,004.97
  6. Step 6: Final answer
    x = 23,264.21

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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.