Home / 12,374.38-18,520.80-10,663.66

Finding the Fourth Proportional to 12,374.38, 18,520.80 and 10,663.66

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Solution

The fourth proportional to 12,374.38, 18,520.80 and 10,663.66 is: 15,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,374.38 : 18,520.80 = 10,663.66 : x
  2. Step 2: Convert to fraction form
    12,374.38/18,520.80 = 10,663.66/x
  3. Step 3: Cross multiply
    12,374.38x = 18,520.80 × 10,663.66
  4. Step 4: Simplify right side
    12,374.38x = 197,499,514.13
  5. Step 5: Solve for x
    x = 197,499,514.13/12,374.38
  6. Step 6: Final answer
    x = 15,960.36

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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.