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Finding the Fourth Proportional to 12,339.78, 17,028.93 and 7,034.68

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Solution

The fourth proportional to 12,339.78, 17,028.93 and 7,034.68 is: 9,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.78 : 17,028.93 = 7,034.68 : x
  2. Step 2: Convert to fraction form
    12,339.78/17,028.93 = 7,034.68/x
  3. Step 3: Cross multiply
    12,339.78x = 17,028.93 × 7,034.68
  4. Step 4: Simplify right side
    12,339.78x = 119,793,073.29
  5. Step 5: Solve for x
    x = 119,793,073.29/12,339.78
  6. Step 6: Final answer
    x = 9,707.88

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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.