Home / 31,143.76-42,970.14-17,712.85

Finding the Fourth Proportional to 31,143.76, 42,970.14 and 17,712.85

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Solution

The fourth proportional to 31,143.76, 42,970.14 and 17,712.85 is: 24,439.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.76 : 42,970.14 = 17,712.85 : x
  2. Step 2: Convert to fraction form
    31,143.76/42,970.14 = 17,712.85/x
  3. Step 3: Cross multiply
    31,143.76x = 42,970.14 × 17,712.85
  4. Step 4: Simplify right side
    31,143.76x = 761,123,644.30
  5. Step 5: Solve for x
    x = 761,123,644.30/31,143.76
  6. Step 6: Final answer
    x = 24,439.04

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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.