Home / 11,600.74-15,990.33-9,078.79

Finding the Fourth Proportional to 11,600.74, 15,990.33 and 9,078.79

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Solution

The fourth proportional to 11,600.74, 15,990.33 and 9,078.79 is: 12,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,600.74 : 15,990.33 = 9,078.79 : x
  2. Step 2: Convert to fraction form
    11,600.74/15,990.33 = 9,078.79/x
  3. Step 3: Cross multiply
    11,600.74x = 15,990.33 × 9,078.79
  4. Step 4: Simplify right side
    11,600.74x = 145,172,848.10
  5. Step 5: Solve for x
    x = 145,172,848.10/11,600.74
  6. Step 6: Final answer
    x = 12,514.10

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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.