Home / 12,426.18-17,142.55-7,387.66

Finding the Fourth Proportional to 12,426.18, 17,142.55 and 7,387.66

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Solution

The fourth proportional to 12,426.18, 17,142.55 and 7,387.66 is: 10,191.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.18 : 17,142.55 = 7,387.66 : x
  2. Step 2: Convert to fraction form
    12,426.18/17,142.55 = 7,387.66/x
  3. Step 3: Cross multiply
    12,426.18x = 17,142.55 × 7,387.66
  4. Step 4: Simplify right side
    12,426.18x = 126,643,247.85
  5. Step 5: Solve for x
    x = 126,643,247.85/12,426.18
  6. Step 6: Final answer
    x = 10,191.64

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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.