Home / 28,292.71-39,046.90-15,717.46

Finding the Fourth Proportional to 28,292.71, 39,046.90 and 15,717.46

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Solution

The fourth proportional to 28,292.71, 39,046.90 and 15,717.46 is: 21,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.71 : 39,046.90 = 15,717.46 : x
  2. Step 2: Convert to fraction form
    28,292.71/39,046.90 = 15,717.46/x
  3. Step 3: Cross multiply
    28,292.71x = 39,046.90 × 15,717.46
  4. Step 4: Simplify right side
    28,292.71x = 613,717,893.64
  5. Step 5: Solve for x
    x = 613,717,893.64/28,292.71
  6. Step 6: Final answer
    x = 21,691.74

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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.