Home / 11,079.74-15,295.68-8,556.18

Finding the Fourth Proportional to 11,079.74, 15,295.68 and 8,556.18

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Solution

The fourth proportional to 11,079.74, 15,295.68 and 8,556.18 is: 11,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,079.74 : 15,295.68 = 8,556.18 : x
  2. Step 2: Convert to fraction form
    11,079.74/15,295.68 = 8,556.18/x
  3. Step 3: Cross multiply
    11,079.74x = 15,295.68 × 8,556.18
  4. Step 4: Simplify right side
    11,079.74x = 130,872,569.91
  5. Step 5: Solve for x
    x = 130,872,569.91/11,079.74
  6. Step 6: Final answer
    x = 11,811.89

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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.