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Finding the Fourth Proportional to 12,836.98, 17,708.92 and 8,359.08

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Solution

The fourth proportional to 12,836.98, 17,708.92 and 8,359.08 is: 11,531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.98 : 17,708.92 = 8,359.08 : x
  2. Step 2: Convert to fraction form
    12,836.98/17,708.92 = 8,359.08/x
  3. Step 3: Cross multiply
    12,836.98x = 17,708.92 × 8,359.08
  4. Step 4: Simplify right side
    12,836.98x = 148,030,278.99
  5. Step 5: Solve for x
    x = 148,030,278.99/12,836.98
  6. Step 6: Final answer
    x = 11,531.55

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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.