Home / 10,119.75-15,179.60-7,783.92

Finding the Fourth Proportional to 10,119.75, 15,179.60 and 7,783.92

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Solution

The fourth proportional to 10,119.75, 15,179.60 and 7,783.92 is: 11,675.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.75 : 15,179.60 = 7,783.92 : x
  2. Step 2: Convert to fraction form
    10,119.75/15,179.60 = 7,783.92/x
  3. Step 3: Cross multiply
    10,119.75x = 15,179.60 × 7,783.92
  4. Step 4: Simplify right side
    10,119.75x = 118,156,753.11
  5. Step 5: Solve for x
    x = 118,156,753.11/10,119.75
  6. Step 6: Final answer
    x = 11,675.86

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.