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Finding the Fourth Proportional to 12,343.86, 17,034.48 and 7,038.90

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Solution

The fourth proportional to 12,343.86, 17,034.48 and 7,038.90 is: 9,713.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.86 : 17,034.48 = 7,038.90 : x
  2. Step 2: Convert to fraction form
    12,343.86/17,034.48 = 7,038.90/x
  3. Step 3: Cross multiply
    12,343.86x = 17,034.48 × 7,038.90
  4. Step 4: Simplify right side
    12,343.86x = 119,904,001.27
  5. Step 5: Solve for x
    x = 119,904,001.27/12,343.86
  6. Step 6: Final answer
    x = 9,713.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.