Home / 12,458.17-18,666.10-7,517.43

Finding the Fourth Proportional to 12,458.17, 18,666.10 and 7,517.43

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Solution

The fourth proportional to 12,458.17, 18,666.10 and 7,517.43 is: 11,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.17 : 18,666.10 = 7,517.43 : x
  2. Step 2: Convert to fraction form
    12,458.17/18,666.10 = 7,517.43/x
  3. Step 3: Cross multiply
    12,458.17x = 18,666.10 × 7,517.43
  4. Step 4: Simplify right side
    12,458.17x = 140,321,100.12
  5. Step 5: Solve for x
    x = 140,321,100.12/12,458.17
  6. Step 6: Final answer
    x = 11,263.38

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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.