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Finding the Fourth Proportional to 16,811.70, 25,217.55 and 5,124.90

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Solution

The fourth proportional to 16,811.70, 25,217.55 and 5,124.90 is: 7,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.70 : 25,217.55 = 5,124.90 : x
  2. Step 2: Convert to fraction form
    16,811.70/25,217.55 = 5,124.90/x
  3. Step 3: Cross multiply
    16,811.70x = 25,217.55 × 5,124.90
  4. Step 4: Simplify right side
    16,811.70x = 129,237,422.00
  5. Step 5: Solve for x
    x = 129,237,422.00/16,811.70
  6. Step 6: Final answer
    x = 7,687.35

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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.