Home / 10,311.60-15,463.80-5,379.60

Finding the Fourth Proportional to 10,311.60, 15,463.80 and 5,379.60

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Solution

The fourth proportional to 10,311.60, 15,463.80 and 5,379.60 is: 8,067.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,311.60 : 15,463.80 = 5,379.60 : x
  2. Step 2: Convert to fraction form
    10,311.60/15,463.80 = 5,379.60/x
  3. Step 3: Cross multiply
    10,311.60x = 15,463.80 × 5,379.60
  4. Step 4: Simplify right side
    10,311.60x = 83,189,058.48
  5. Step 5: Solve for x
    x = 83,189,058.48/10,311.60
  6. Step 6: Final answer
    x = 8,067.52

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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.