Home / 16,290.60-22,481.10-9,218.40

Finding the Fourth Proportional to 16,290.60, 22,481.10 and 9,218.40

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Solution

The fourth proportional to 16,290.60, 22,481.10 and 9,218.40 is: 12,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,290.60 : 22,481.10 = 9,218.40 : x
  2. Step 2: Convert to fraction form
    16,290.60/22,481.10 = 9,218.40/x
  3. Step 3: Cross multiply
    16,290.60x = 22,481.10 × 9,218.40
  4. Step 4: Simplify right side
    16,290.60x = 207,239,772.24
  5. Step 5: Solve for x
    x = 207,239,772.24/16,290.60
  6. Step 6: Final answer
    x = 12,721.43

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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.