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Finding the Fourth Proportional to 12,342.78, 17,031.98 and 6,964.92

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Solution

The fourth proportional to 12,342.78, 17,031.98 and 6,964.92 is: 9,610.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.78 : 17,031.98 = 6,964.92 : x
  2. Step 2: Convert to fraction form
    12,342.78/17,031.98 = 6,964.92/x
  3. Step 3: Cross multiply
    12,342.78x = 17,031.98 × 6,964.92
  4. Step 4: Simplify right side
    12,342.78x = 118,626,343.32
  5. Step 5: Solve for x
    x = 118,626,343.32/12,342.78
  6. Step 6: Final answer
    x = 9,610.99

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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.