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Finding the Fourth Proportional to 12,539.95, 17,290.95 and 7,996.57

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Solution

The fourth proportional to 12,539.95, 17,290.95 and 7,996.57 is: 11,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.95 : 17,290.95 = 7,996.57 : x
  2. Step 2: Convert to fraction form
    12,539.95/17,290.95 = 7,996.57/x
  3. Step 3: Cross multiply
    12,539.95x = 17,290.95 × 7,996.57
  4. Step 4: Simplify right side
    12,539.95x = 138,268,292.04
  5. Step 5: Solve for x
    x = 138,268,292.04/12,539.95
  6. Step 6: Final answer
    x = 11,026.22

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Similar ratio
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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.