Home / 12,278.61-18,418.55-3,514.82

Finding the Fourth Proportional to 12,278.61, 18,418.55 and 3,514.82

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Solution

The fourth proportional to 12,278.61, 18,418.55 and 3,514.82 is: 5,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.61 : 18,418.55 = 3,514.82 : x
  2. Step 2: Convert to fraction form
    12,278.61/18,418.55 = 3,514.82/x
  3. Step 3: Cross multiply
    12,278.61x = 18,418.55 × 3,514.82
  4. Step 4: Simplify right side
    12,278.61x = 64,737,778.24
  5. Step 5: Solve for x
    x = 64,737,778.24/12,278.61
  6. Step 6: Final answer
    x = 5,272.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.