Home / 11,147.94-15,354.60-8,306.21

Finding the Fourth Proportional to 11,147.94, 15,354.60 and 8,306.21

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Solution

The fourth proportional to 11,147.94, 15,354.60 and 8,306.21 is: 11,440.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.94 : 15,354.60 = 8,306.21 : x
  2. Step 2: Convert to fraction form
    11,147.94/15,354.60 = 8,306.21/x
  3. Step 3: Cross multiply
    11,147.94x = 15,354.60 × 8,306.21
  4. Step 4: Simplify right side
    11,147.94x = 127,538,539.30
  5. Step 5: Solve for x
    x = 127,538,539.30/11,147.94
  6. Step 6: Final answer
    x = 11,440.55

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Double scale
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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.