Home / 10,077.20-15,100.40-6,778.08

Finding the Fourth Proportional to 10,077.20, 15,100.40 and 6,778.08

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Solution

The fourth proportional to 10,077.20, 15,100.40 and 6,778.08 is: 10,156.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.20 : 15,100.40 = 6,778.08 : x
  2. Step 2: Convert to fraction form
    10,077.20/15,100.40 = 6,778.08/x
  3. Step 3: Cross multiply
    10,077.20x = 15,100.40 × 6,778.08
  4. Step 4: Simplify right side
    10,077.20x = 102,351,719.23
  5. Step 5: Solve for x
    x = 102,351,719.23/10,077.20
  6. Step 6: Final answer
    x = 10,156.76

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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.