Home / 10,195.28-15,275.20-5,518.50

Finding the Fourth Proportional to 10,195.28, 15,275.20 and 5,518.50

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Solution

The fourth proportional to 10,195.28, 15,275.20 and 5,518.50 is: 8,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,195.28 : 15,275.20 = 5,518.50 : x
  2. Step 2: Convert to fraction form
    10,195.28/15,275.20 = 5,518.50/x
  3. Step 3: Cross multiply
    10,195.28x = 15,275.20 × 5,518.50
  4. Step 4: Simplify right side
    10,195.28x = 84,296,191.20
  5. Step 5: Solve for x
    x = 84,296,191.20/10,195.28
  6. Step 6: Final answer
    x = 8,268.16

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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.