Home / 10,077.20-15,115.80-6,383.60

Finding the Fourth Proportional to 10,077.20, 15,115.80 and 6,383.60

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Solution

The fourth proportional to 10,077.20, 15,115.80 and 6,383.60 is: 9,575.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.20 : 15,115.80 = 6,383.60 : x
  2. Step 2: Convert to fraction form
    10,077.20/15,115.80 = 6,383.60/x
  3. Step 3: Cross multiply
    10,077.20x = 15,115.80 × 6,383.60
  4. Step 4: Simplify right side
    10,077.20x = 96,493,220.88
  5. Step 5: Solve for x
    x = 96,493,220.88/10,077.20
  6. Step 6: Final answer
    x = 9,575.40

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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.