Home / 11,085.90-15,298.54-8,255.70

Finding the Fourth Proportional to 11,085.90, 15,298.54 and 8,255.70

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Solution

The fourth proportional to 11,085.90, 15,298.54 and 8,255.70 is: 11,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,085.90 : 15,298.54 = 8,255.70 : x
  2. Step 2: Convert to fraction form
    11,085.90/15,298.54 = 8,255.70/x
  3. Step 3: Cross multiply
    11,085.90x = 15,298.54 × 8,255.70
  4. Step 4: Simplify right side
    11,085.90x = 126,300,136.04
  5. Step 5: Solve for x
    x = 126,300,136.04/11,085.90
  6. Step 6: Final answer
    x = 11,392.87

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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.