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Finding the Fourth Proportional to 12,959.15, 17,881.97 and 8,177.27

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Solution

The fourth proportional to 12,959.15, 17,881.97 and 8,177.27 is: 11,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.15 : 17,881.97 = 8,177.27 : x
  2. Step 2: Convert to fraction form
    12,959.15/17,881.97 = 8,177.27/x
  3. Step 3: Cross multiply
    12,959.15x = 17,881.97 × 8,177.27
  4. Step 4: Simplify right side
    12,959.15x = 146,225,566.53
  5. Step 5: Solve for x
    x = 146,225,566.53/12,959.15
  6. Step 6: Final answer
    x = 11,283.58

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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.