Home / 28,602.39-39,470.25-15,681.61

Finding the Fourth Proportional to 28,602.39, 39,470.25 and 15,681.61

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Solution

The fourth proportional to 28,602.39, 39,470.25 and 15,681.61 is: 21,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.39 : 39,470.25 = 15,681.61 : x
  2. Step 2: Convert to fraction form
    28,602.39/39,470.25 = 15,681.61/x
  3. Step 3: Cross multiply
    28,602.39x = 39,470.25 × 15,681.61
  4. Step 4: Simplify right side
    28,602.39x = 618,957,175.25
  5. Step 5: Solve for x
    x = 618,957,175.25/28,602.39
  6. Step 6: Final answer
    x = 21,640.05

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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.