Home / 16,291.52-22,481.28-9,218.72

Finding the Fourth Proportional to 16,291.52, 22,481.28 and 9,218.72

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Solution

The fourth proportional to 16,291.52, 22,481.28 and 9,218.72 is: 12,721.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,291.52 : 22,481.28 = 9,218.72 : x
  2. Step 2: Convert to fraction form
    16,291.52/22,481.28 = 9,218.72/x
  3. Step 3: Cross multiply
    16,291.52x = 22,481.28 × 9,218.72
  4. Step 4: Simplify right side
    16,291.52x = 207,248,625.56
  5. Step 5: Solve for x
    x = 207,248,625.56/16,291.52
  6. Step 6: Final answer
    x = 12,721.26

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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.