Home / 12,861.34-17,739.12-9,080.57

Finding the Fourth Proportional to 12,861.34, 17,739.12 and 9,080.57

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Solution

The fourth proportional to 12,861.34, 17,739.12 and 9,080.57 is: 12,524.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.34 : 17,739.12 = 9,080.57 : x
  2. Step 2: Convert to fraction form
    12,861.34/17,739.12 = 9,080.57/x
  3. Step 3: Cross multiply
    12,861.34x = 17,739.12 × 9,080.57
  4. Step 4: Simplify right side
    12,861.34x = 161,081,320.90
  5. Step 5: Solve for x
    x = 161,081,320.90/12,861.34
  6. Step 6: Final answer
    x = 12,524.46

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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.