Home / 15,132.12-20,864.19-9,825

Finding the Fourth Proportional to 15,132.12, 20,864.19 and 9,825

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Solution

The fourth proportional to 15,132.12, 20,864.19 and 9,825 is: 13,546.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.12 : 20,864.19 = 9,825 : x
  2. Step 2: Convert to fraction form
    15,132.12/20,864.19 = 9,825/x
  3. Step 3: Cross multiply
    15,132.12x = 20,864.19 × 9,825
  4. Step 4: Simplify right side
    15,132.12x = 204,990,666.75
  5. Step 5: Solve for x
    x = 204,990,666.75/15,132.12
  6. Step 6: Final answer
    x = 13,546.72

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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.