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Finding the Fourth Proportional to 16,699.60, 25,000.80 and 10,138.60

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Solution

The fourth proportional to 16,699.60, 25,000.80 and 10,138.60 is: 15,178.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,699.60 : 25,000.80 = 10,138.60 : x
  2. Step 2: Convert to fraction form
    16,699.60/25,000.80 = 10,138.60/x
  3. Step 3: Cross multiply
    16,699.60x = 25,000.80 × 10,138.60
  4. Step 4: Simplify right side
    16,699.60x = 253,473,110.88
  5. Step 5: Solve for x
    x = 253,473,110.88/16,699.60
  6. Step 6: Final answer
    x = 15,178.39

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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.