Home / 11,138.52-15,367.68-6,422.16

Finding the Fourth Proportional to 11,138.52, 15,367.68 and 6,422.16

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Solution

The fourth proportional to 11,138.52, 15,367.68 and 6,422.16 is: 8,860.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.52 : 15,367.68 = 6,422.16 : x
  2. Step 2: Convert to fraction form
    11,138.52/15,367.68 = 6,422.16/x
  3. Step 3: Cross multiply
    11,138.52x = 15,367.68 × 6,422.16
  4. Step 4: Simplify right side
    11,138.52x = 98,693,699.79
  5. Step 5: Solve for x
    x = 98,693,699.79/11,138.52
  6. Step 6: Final answer
    x = 8,860.58

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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.