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Finding the Fourth Proportional to 17,915.12, 24,724.40 and 9,957.12

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Solution

The fourth proportional to 17,915.12, 24,724.40 and 9,957.12 is: 13,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,915.12 : 24,724.40 = 9,957.12 : x
  2. Step 2: Convert to fraction form
    17,915.12/24,724.40 = 9,957.12/x
  3. Step 3: Cross multiply
    17,915.12x = 24,724.40 × 9,957.12
  4. Step 4: Simplify right side
    17,915.12x = 246,183,817.73
  5. Step 5: Solve for x
    x = 246,183,817.73/17,915.12
  6. Step 6: Final answer
    x = 13,741.68

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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.