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Finding the Fourth Proportional to 9,888.80, 14,833.20 and 9,451.40

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Solution

The fourth proportional to 9,888.80, 14,833.20 and 9,451.40 is: 14,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.80 : 14,833.20 = 9,451.40 : x
  2. Step 2: Convert to fraction form
    9,888.80/14,833.20 = 9,451.40/x
  3. Step 3: Cross multiply
    9,888.80x = 14,833.20 × 9,451.40
  4. Step 4: Simplify right side
    9,888.80x = 140,194,506.48
  5. Step 5: Solve for x
    x = 140,194,506.48/9,888.80
  6. Step 6: Final answer
    x = 14,177.10

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Double scale
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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.