Home / 31,140.13-42,974.67-17,713.75

Finding the Fourth Proportional to 31,140.13, 42,974.67 and 17,713.75

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Solution

The fourth proportional to 31,140.13, 42,974.67 and 17,713.75 is: 24,445.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.13 : 42,974.67 = 17,713.75 : x
  2. Step 2: Convert to fraction form
    31,140.13/42,974.67 = 17,713.75/x
  3. Step 3: Cross multiply
    31,140.13x = 42,974.67 × 17,713.75
  4. Step 4: Simplify right side
    31,140.13x = 761,242,560.71
  5. Step 5: Solve for x
    x = 761,242,560.71/31,140.13
  6. Step 6: Final answer
    x = 24,445.71

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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.