Home / 12,514.40-18,776.84-5,490.79

Finding the Fourth Proportional to 12,514.40, 18,776.84 and 5,490.79

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Solution

The fourth proportional to 12,514.40, 18,776.84 and 5,490.79 is: 8,238.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,514.40 : 18,776.84 = 5,490.79 : x
  2. Step 2: Convert to fraction form
    12,514.40/18,776.84 = 5,490.79/x
  3. Step 3: Cross multiply
    12,514.40x = 18,776.84 × 5,490.79
  4. Step 4: Simplify right side
    12,514.40x = 103,099,610.91
  5. Step 5: Solve for x
    x = 103,099,610.91/12,514.40
  6. Step 6: Final answer
    x = 8,238.48

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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.