Home / 11,201.20-15,439.44-8,955.92

Finding the Fourth Proportional to 11,201.20, 15,439.44 and 8,955.92

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Solution

The fourth proportional to 11,201.20, 15,439.44 and 8,955.92 is: 12,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,201.20 : 15,439.44 = 8,955.92 : x
  2. Step 2: Convert to fraction form
    11,201.20/15,439.44 = 8,955.92/x
  3. Step 3: Cross multiply
    11,201.20x = 15,439.44 × 8,955.92
  4. Step 4: Simplify right side
    11,201.20x = 138,274,389.48
  5. Step 5: Solve for x
    x = 138,274,389.48/11,201.20
  6. Step 6: Final answer
    x = 12,344.60

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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.