Home / 9,966.60-13,753.91-5,490.35

Finding the Fourth Proportional to 9,966.60, 13,753.91 and 5,490.35

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Solution

The fourth proportional to 9,966.60, 13,753.91 and 5,490.35 is: 7,576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966.60 : 13,753.91 = 5,490.35 : x
  2. Step 2: Convert to fraction form
    9,966.60/13,753.91 = 5,490.35/x
  3. Step 3: Cross multiply
    9,966.60x = 13,753.91 × 5,490.35
  4. Step 4: Simplify right side
    9,966.60x = 75,513,700.74
  5. Step 5: Solve for x
    x = 75,513,700.74/9,966.60
  6. Step 6: Final answer
    x = 7,576.68

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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.