Home / 31,531.07-47,275.42-12,543.13

Finding the Fourth Proportional to 31,531.07, 47,275.42 and 12,543.13

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Solution

The fourth proportional to 31,531.07, 47,275.42 and 12,543.13 is: 18,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,531.07 : 47,275.42 = 12,543.13 : x
  2. Step 2: Convert to fraction form
    31,531.07/47,275.42 = 12,543.13/x
  3. Step 3: Cross multiply
    31,531.07x = 47,275.42 × 12,543.13
  4. Step 4: Simplify right side
    31,531.07x = 592,981,692.43
  5. Step 5: Solve for x
    x = 592,981,692.43/31,531.07
  6. Step 6: Final answer
    x = 18,806.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.