Home / 15,134.14-20,886.96-9,165.66

Finding the Fourth Proportional to 15,134.14, 20,886.96 and 9,165.66

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Solution

The fourth proportional to 15,134.14, 20,886.96 and 9,165.66 is: 12,649.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.14 : 20,886.96 = 9,165.66 : x
  2. Step 2: Convert to fraction form
    15,134.14/20,886.96 = 9,165.66/x
  3. Step 3: Cross multiply
    15,134.14x = 20,886.96 × 9,165.66
  4. Step 4: Simplify right side
    15,134.14x = 191,442,773.79
  5. Step 5: Solve for x
    x = 191,442,773.79/15,134.14
  6. Step 6: Final answer
    x = 12,649.73

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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.