Home / 9,966.14-13,752.79-5,489.78

Finding the Fourth Proportional to 9,966.14, 13,752.79 and 5,489.78

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Solution

The fourth proportional to 9,966.14, 13,752.79 and 5,489.78 is: 7,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.14 : 13,752.79 = 5,489.78 : x
  2. Step 2: Convert to fraction form
    9,966.14/13,752.79 = 5,489.78/x
  3. Step 3: Cross multiply
    9,966.14x = 13,752.79 × 5,489.78
  4. Step 4: Simplify right side
    9,966.14x = 75,499,709.00
  5. Step 5: Solve for x
    x = 75,499,709.00/9,966.14
  6. Step 6: Final answer
    x = 7,575.62

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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.