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Finding the Fourth Proportional to 15,592.68, 21,519.36 and 8,520.15

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Solution

The fourth proportional to 15,592.68, 21,519.36 and 8,520.15 is: 11,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,592.68 : 21,519.36 = 8,520.15 : x
  2. Step 2: Convert to fraction form
    15,592.68/21,519.36 = 8,520.15/x
  3. Step 3: Cross multiply
    15,592.68x = 21,519.36 × 8,520.15
  4. Step 4: Simplify right side
    15,592.68x = 183,348,175.10
  5. Step 5: Solve for x
    x = 183,348,175.10/15,592.68
  6. Step 6: Final answer
    x = 11,758.61

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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.