Home / 12,739.85-17,574.87-8,965.08

Finding the Fourth Proportional to 12,739.85, 17,574.87 and 8,965.08

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Solution

The fourth proportional to 12,739.85, 17,574.87 and 8,965.08 is: 12,367.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.85 : 17,574.87 = 8,965.08 : x
  2. Step 2: Convert to fraction form
    12,739.85/17,574.87 = 8,965.08/x
  3. Step 3: Cross multiply
    12,739.85x = 17,574.87 × 8,965.08
  4. Step 4: Simplify right side
    12,739.85x = 157,560,149.16
  5. Step 5: Solve for x
    x = 157,560,149.16/12,739.85
  6. Step 6: Final answer
    x = 12,367.51

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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.