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Finding the Fourth Proportional to 10,572.22, 15,892.44 and 8,515.18

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Solution

The fourth proportional to 10,572.22, 15,892.44 and 8,515.18 is: 12,800.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,572.22 : 15,892.44 = 8,515.18 : x
  2. Step 2: Convert to fraction form
    10,572.22/15,892.44 = 8,515.18/x
  3. Step 3: Cross multiply
    10,572.22x = 15,892.44 × 8,515.18
  4. Step 4: Simplify right side
    10,572.22x = 135,326,987.24
  5. Step 5: Solve for x
    x = 135,326,987.24/10,572.22
  6. Step 6: Final answer
    x = 12,800.24

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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.