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Finding the Fourth Proportional to 12,042.38, 18,060.74 and 6,779.68

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Solution

The fourth proportional to 12,042.38, 18,060.74 and 6,779.68 is: 10,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.38 : 18,060.74 = 6,779.68 : x
  2. Step 2: Convert to fraction form
    12,042.38/18,060.74 = 6,779.68/x
  3. Step 3: Cross multiply
    12,042.38x = 18,060.74 × 6,779.68
  4. Step 4: Simplify right side
    12,042.38x = 122,445,913.56
  5. Step 5: Solve for x
    x = 122,445,913.56/12,042.38
  6. Step 6: Final answer
    x = 10,167.92

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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.