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Finding the Fourth Proportional to 12,356.90, 17,052.43 and 6,691.52

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Solution

The fourth proportional to 12,356.90, 17,052.43 and 6,691.52 is: 9,234.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.90 : 17,052.43 = 6,691.52 : x
  2. Step 2: Convert to fraction form
    12,356.90/17,052.43 = 6,691.52/x
  3. Step 3: Cross multiply
    12,356.90x = 17,052.43 × 6,691.52
  4. Step 4: Simplify right side
    12,356.90x = 114,106,615.00
  5. Step 5: Solve for x
    x = 114,106,615.00/12,356.90
  6. Step 6: Final answer
    x = 9,234.25

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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.