Home / 11,250.62-15,530.40-6,778.20

Finding the Fourth Proportional to 11,250.62, 15,530.40 and 6,778.20

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Solution

The fourth proportional to 11,250.62, 15,530.40 and 6,778.20 is: 9,356.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,250.62 : 15,530.40 = 6,778.20 : x
  2. Step 2: Convert to fraction form
    11,250.62/15,530.40 = 6,778.20/x
  3. Step 3: Cross multiply
    11,250.62x = 15,530.40 × 6,778.20
  4. Step 4: Simplify right side
    11,250.62x = 105,268,157.28
  5. Step 5: Solve for x
    x = 105,268,157.28/11,250.62
  6. Step 6: Final answer
    x = 9,356.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.