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Finding the Fourth Proportional to 15,234.62, 21,023.63 and 8,520.17

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Solution

The fourth proportional to 15,234.62, 21,023.63 and 8,520.17 is: 11,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,234.62 : 21,023.63 = 8,520.17 : x
  2. Step 2: Convert to fraction form
    15,234.62/21,023.63 = 8,520.17/x
  3. Step 3: Cross multiply
    15,234.62x = 21,023.63 × 8,520.17
  4. Step 4: Simplify right side
    15,234.62x = 179,124,859.02
  5. Step 5: Solve for x
    x = 179,124,859.02/15,234.62
  6. Step 6: Final answer
    x = 11,757.75

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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.