Home / 27,972.39-38,602.71-15,397.14

Finding the Fourth Proportional to 27,972.39, 38,602.71 and 15,397.14

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Solution

The fourth proportional to 27,972.39, 38,602.71 and 15,397.14 is: 21,248.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,972.39 : 38,602.71 = 15,397.14 : x
  2. Step 2: Convert to fraction form
    27,972.39/38,602.71 = 15,397.14/x
  3. Step 3: Cross multiply
    27,972.39x = 38,602.71 × 15,397.14
  4. Step 4: Simplify right side
    27,972.39x = 594,371,330.25
  5. Step 5: Solve for x
    x = 594,371,330.25/27,972.39
  6. Step 6: Final answer
    x = 21,248.50

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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.