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Finding the Fourth Proportional to 10,651.60, 15,977.40 and 9,809.20

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Solution

The fourth proportional to 10,651.60, 15,977.40 and 9,809.20 is: 14,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,651.60 : 15,977.40 = 9,809.20 : x
  2. Step 2: Convert to fraction form
    10,651.60/15,977.40 = 9,809.20/x
  3. Step 3: Cross multiply
    10,651.60x = 15,977.40 × 9,809.20
  4. Step 4: Simplify right side
    10,651.60x = 156,725,512.08
  5. Step 5: Solve for x
    x = 156,725,512.08/10,651.60
  6. Step 6: Final answer
    x = 14,713.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.