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Finding the Fourth Proportional to 15,086.88, 20,814.48 and 8,462.88

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Solution

The fourth proportional to 15,086.88, 20,814.48 and 8,462.88 is: 11,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.88 : 20,814.48 = 8,462.88 : x
  2. Step 2: Convert to fraction form
    15,086.88/20,814.48 = 8,462.88/x
  3. Step 3: Cross multiply
    15,086.88x = 20,814.48 × 8,462.88
  4. Step 4: Simplify right side
    15,086.88x = 176,150,446.50
  5. Step 5: Solve for x
    x = 176,150,446.50/15,086.88
  6. Step 6: Final answer
    x = 11,675.74

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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.