Home / 11,565.18-15,969.15-10,680.66

Finding the Fourth Proportional to 11,565.18, 15,969.15 and 10,680.66

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Solution

The fourth proportional to 11,565.18, 15,969.15 and 10,680.66 is: 14,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,565.18 : 15,969.15 = 10,680.66 : x
  2. Step 2: Convert to fraction form
    11,565.18/15,969.15 = 10,680.66/x
  3. Step 3: Cross multiply
    11,565.18x = 15,969.15 × 10,680.66
  4. Step 4: Simplify right side
    11,565.18x = 170,561,061.64
  5. Step 5: Solve for x
    x = 170,561,061.64/11,565.18
  6. Step 6: Final answer
    x = 14,747.81

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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.