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Finding the Fourth Proportional to 15,008.96, 20,713.61 and 8,295.90

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Solution

The fourth proportional to 15,008.96, 20,713.61 and 8,295.90 is: 11,449.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.96 : 20,713.61 = 8,295.90 : x
  2. Step 2: Convert to fraction form
    15,008.96/20,713.61 = 8,295.90/x
  3. Step 3: Cross multiply
    15,008.96x = 20,713.61 × 8,295.90
  4. Step 4: Simplify right side
    15,008.96x = 171,838,037.20
  5. Step 5: Solve for x
    x = 171,838,037.20/15,008.96
  6. Step 6: Final answer
    x = 11,449.03

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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.