Home / 9,966.57-13,753.91-5,490.74

Finding the Fourth Proportional to 9,966.57, 13,753.91 and 5,490.74

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Solution

The fourth proportional to 9,966.57, 13,753.91 and 5,490.74 is: 7,577.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.57 : 13,753.91 = 5,490.74 : x
  2. Step 2: Convert to fraction form
    9,966.57/13,753.91 = 5,490.74/x
  3. Step 3: Cross multiply
    9,966.57x = 13,753.91 × 5,490.74
  4. Step 4: Simplify right side
    9,966.57x = 75,519,122.26
  5. Step 5: Solve for x
    x = 75,519,122.26/9,966.57
  6. Step 6: Final answer
    x = 7,577.24

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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.