Home / 11,279.16-15,580.14-8,658.96

Finding the Fourth Proportional to 11,279.16, 15,580.14 and 8,658.96

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Solution

The fourth proportional to 11,279.16, 15,580.14 and 8,658.96 is: 11,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.16 : 15,580.14 = 8,658.96 : x
  2. Step 2: Convert to fraction form
    11,279.16/15,580.14 = 8,658.96/x
  3. Step 3: Cross multiply
    11,279.16x = 15,580.14 × 8,658.96
  4. Step 4: Simplify right side
    11,279.16x = 134,907,809.05
  5. Step 5: Solve for x
    x = 134,907,809.05/11,279.16
  6. Step 6: Final answer
    x = 11,960.80

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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.