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Finding the Fourth Proportional to 15,008.11, 20,710.96 and 8,293.61

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Solution

The fourth proportional to 15,008.11, 20,710.96 and 8,293.61 is: 11,445.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.11 : 20,710.96 = 8,293.61 : x
  2. Step 2: Convert to fraction form
    15,008.11/20,710.96 = 8,293.61/x
  3. Step 3: Cross multiply
    15,008.11x = 20,710.96 × 8,293.61
  4. Step 4: Simplify right side
    15,008.11x = 171,768,656.01
  5. Step 5: Solve for x
    x = 171,768,656.01/15,008.11
  6. Step 6: Final answer
    x = 11,445.06

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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.