Home / 11,138.24-15,370.20-6,422.24

Finding the Fourth Proportional to 11,138.24, 15,370.20 and 6,422.24

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Solution

The fourth proportional to 11,138.24, 15,370.20 and 6,422.24 is: 8,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.24 : 15,370.20 = 6,422.24 : x
  2. Step 2: Convert to fraction form
    11,138.24/15,370.20 = 6,422.24/x
  3. Step 3: Cross multiply
    11,138.24x = 15,370.20 × 6,422.24
  4. Step 4: Simplify right side
    11,138.24x = 98,711,113.25
  5. Step 5: Solve for x
    x = 98,711,113.25/11,138.24
  6. Step 6: Final answer
    x = 8,862.36

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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.