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Finding the Fourth Proportional to 17,011.44, 25,517.16 and 7,787.76

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Solution

The fourth proportional to 17,011.44, 25,517.16 and 7,787.76 is: 11,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,011.44 : 25,517.16 = 7,787.76 : x
  2. Step 2: Convert to fraction form
    17,011.44/25,517.16 = 7,787.76/x
  3. Step 3: Cross multiply
    17,011.44x = 25,517.16 × 7,787.76
  4. Step 4: Simplify right side
    17,011.44x = 198,721,517.96
  5. Step 5: Solve for x
    x = 198,721,517.96/17,011.44
  6. Step 6: Final answer
    x = 11,681.64

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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.