Home / 10,519.55-15,778.11-3,123.24

Finding the Fourth Proportional to 10,519.55, 15,778.11 and 3,123.24

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Solution

The fourth proportional to 10,519.55, 15,778.11 and 3,123.24 is: 4,684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.55 : 15,778.11 = 3,123.24 : x
  2. Step 2: Convert to fraction form
    10,519.55/15,778.11 = 3,123.24/x
  3. Step 3: Cross multiply
    10,519.55x = 15,778.11 × 3,123.24
  4. Step 4: Simplify right side
    10,519.55x = 49,278,824.28
  5. Step 5: Solve for x
    x = 49,278,824.28/10,519.55
  6. Step 6: Final answer
    x = 4,684.50

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Half scale
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Double scale
Find fourth proportional to 10,520.55, 15,779.61 and 3,124.24
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.