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Finding the Fourth Proportional to 17,915.80, 24,724.64 and 9,958.16

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Solution

The fourth proportional to 17,915.80, 24,724.64 and 9,958.16 is: 13,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,915.80 : 24,724.64 = 9,958.16 : x
  2. Step 2: Convert to fraction form
    17,915.80/24,724.64 = 9,958.16/x
  3. Step 3: Cross multiply
    17,915.80x = 24,724.64 × 9,958.16
  4. Step 4: Simplify right side
    17,915.80x = 246,211,797.44
  5. Step 5: Solve for x
    x = 246,211,797.44/17,915.80
  6. Step 6: Final answer
    x = 13,742.72

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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.