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Finding the Fourth Proportional to 16,699.60, 25,008.90 and 8,891.20

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Solution

The fourth proportional to 16,699.60, 25,008.90 and 8,891.20 is: 13,315.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,699.60 : 25,008.90 = 8,891.20 : x
  2. Step 2: Convert to fraction form
    16,699.60/25,008.90 = 8,891.20/x
  3. Step 3: Cross multiply
    16,699.60x = 25,008.90 × 8,891.20
  4. Step 4: Simplify right side
    16,699.60x = 222,359,131.68
  5. Step 5: Solve for x
    x = 222,359,131.68/16,699.60
  6. Step 6: Final answer
    x = 13,315.24

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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.