Home / 10,961.28-15,126.71-6,245.60

Finding the Fourth Proportional to 10,961.28, 15,126.71 and 6,245.60

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Solution

The fourth proportional to 10,961.28, 15,126.71 and 6,245.60 is: 8,619.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.28 : 15,126.71 = 6,245.60 : x
  2. Step 2: Convert to fraction form
    10,961.28/15,126.71 = 6,245.60/x
  3. Step 3: Cross multiply
    10,961.28x = 15,126.71 × 6,245.60
  4. Step 4: Simplify right side
    10,961.28x = 94,475,273.11
  5. Step 5: Solve for x
    x = 94,475,273.11/10,961.28
  6. Step 6: Final answer
    x = 8,619.00

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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.