Home / 12,621.80-17,419.38-7,587.66

Finding the Fourth Proportional to 12,621.80, 17,419.38 and 7,587.66

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Solution

The fourth proportional to 12,621.80, 17,419.38 and 7,587.66 is: 10,471.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.80 : 17,419.38 = 7,587.66 : x
  2. Step 2: Convert to fraction form
    12,621.80/17,419.38 = 7,587.66/x
  3. Step 3: Cross multiply
    12,621.80x = 17,419.38 × 7,587.66
  4. Step 4: Simplify right side
    12,621.80x = 132,172,332.85
  5. Step 5: Solve for x
    x = 132,172,332.85/12,621.80
  6. Step 6: Final answer
    x = 10,471.75

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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.