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Finding the Fourth Proportional to 28,010.87, 38,654.50 and 15,264.17

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Solution

The fourth proportional to 28,010.87, 38,654.50 and 15,264.17 is: 21,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.87 : 38,654.50 = 15,264.17 : x
  2. Step 2: Convert to fraction form
    28,010.87/38,654.50 = 15,264.17/x
  3. Step 3: Cross multiply
    28,010.87x = 38,654.50 × 15,264.17
  4. Step 4: Simplify right side
    28,010.87x = 590,028,859.27
  5. Step 5: Solve for x
    x = 590,028,859.27/28,010.87
  6. Step 6: Final answer
    x = 21,064.28

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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.