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Finding the Fourth Proportional to 15,108.20, 22,619.10 and 9,276.20

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Solution

The fourth proportional to 15,108.20, 22,619.10 and 9,276.20 is: 13,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.20 : 22,619.10 = 9,276.20 : x
  2. Step 2: Convert to fraction form
    15,108.20/22,619.10 = 9,276.20/x
  3. Step 3: Cross multiply
    15,108.20x = 22,619.10 × 9,276.20
  4. Step 4: Simplify right side
    15,108.20x = 209,819,295.42
  5. Step 5: Solve for x
    x = 209,819,295.42/15,108.20
  6. Step 6: Final answer
    x = 13,887.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.