Home / 28,306.26-39,062.25-15,730.74

Finding the Fourth Proportional to 28,306.26, 39,062.25 and 15,730.74

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Solution

The fourth proportional to 28,306.26, 39,062.25 and 15,730.74 is: 21,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.26 : 39,062.25 = 15,730.74 : x
  2. Step 2: Convert to fraction form
    28,306.26/39,062.25 = 15,730.74/x
  3. Step 3: Cross multiply
    28,306.26x = 39,062.25 × 15,730.74
  4. Step 4: Simplify right side
    28,306.26x = 614,478,098.57
  5. Step 5: Solve for x
    x = 614,478,098.57/28,306.26
  6. Step 6: Final answer
    x = 21,708.21

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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.