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Finding the Fourth Proportional to 10,654.40, 15,981.60 and 9,925.40

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Solution

The fourth proportional to 10,654.40, 15,981.60 and 9,925.40 is: 14,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,654.40 : 15,981.60 = 9,925.40 : x
  2. Step 2: Convert to fraction form
    10,654.40/15,981.60 = 9,925.40/x
  3. Step 3: Cross multiply
    10,654.40x = 15,981.60 × 9,925.40
  4. Step 4: Simplify right side
    10,654.40x = 158,623,772.64
  5. Step 5: Solve for x
    x = 158,623,772.64/10,654.40
  6. Step 6: Final answer
    x = 14,888.10

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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.