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Finding the Fourth Proportional to 16,915.36, 25,373.04 and 9,986.08

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Solution

The fourth proportional to 16,915.36, 25,373.04 and 9,986.08 is: 14,979.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,915.36 : 25,373.04 = 9,986.08 : x
  2. Step 2: Convert to fraction form
    16,915.36/25,373.04 = 9,986.08/x
  3. Step 3: Cross multiply
    16,915.36x = 25,373.04 × 9,986.08
  4. Step 4: Simplify right side
    16,915.36x = 253,377,207.28
  5. Step 5: Solve for x
    x = 253,377,207.28/16,915.36
  6. Step 6: Final answer
    x = 14,979.12

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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.