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Finding the Fourth Proportional to 16,986.46, 25,489.62 and 7,124.88

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Solution

The fourth proportional to 16,986.46, 25,489.62 and 7,124.88 is: 10,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.46 : 25,489.62 = 7,124.88 : x
  2. Step 2: Convert to fraction form
    16,986.46/25,489.62 = 7,124.88/x
  3. Step 3: Cross multiply
    16,986.46x = 25,489.62 × 7,124.88
  4. Step 4: Simplify right side
    16,986.46x = 181,610,483.75
  5. Step 5: Solve for x
    x = 181,610,483.75/16,986.46
  6. Step 6: Final answer
    x = 10,691.49

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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.