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Finding the Fourth Proportional to 16,752.60, 25,129.50 and 8,428.08

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Solution

The fourth proportional to 16,752.60, 25,129.50 and 8,428.08 is: 12,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,752.60 : 25,129.50 = 8,428.08 : x
  2. Step 2: Convert to fraction form
    16,752.60/25,129.50 = 8,428.08/x
  3. Step 3: Cross multiply
    16,752.60x = 25,129.50 × 8,428.08
  4. Step 4: Simplify right side
    16,752.60x = 211,793,522.69
  5. Step 5: Solve for x
    x = 211,793,522.69/16,752.60
  6. Step 6: Final answer
    x = 12,642.43

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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.