Home / 12,539.34-17,305.92-8,236.15

Finding the Fourth Proportional to 12,539.34, 17,305.92 and 8,236.15

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Solution

The fourth proportional to 12,539.34, 17,305.92 and 8,236.15 is: 11,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.34 : 17,305.92 = 8,236.15 : x
  2. Step 2: Convert to fraction form
    12,539.34/17,305.92 = 8,236.15/x
  3. Step 3: Cross multiply
    12,539.34x = 17,305.92 × 8,236.15
  4. Step 4: Simplify right side
    12,539.34x = 142,534,109.74
  5. Step 5: Solve for x
    x = 142,534,109.74/12,539.34
  6. Step 6: Final answer
    x = 11,366.95

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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.