Home / 16,290.18-22,481.52-9,120.78

Finding the Fourth Proportional to 16,290.18, 22,481.52 and 9,120.78

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Solution

The fourth proportional to 16,290.18, 22,481.52 and 9,120.78 is: 12,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,290.18 : 22,481.52 = 9,120.78 : x
  2. Step 2: Convert to fraction form
    16,290.18/22,481.52 = 9,120.78/x
  3. Step 3: Cross multiply
    16,290.18x = 22,481.52 × 9,120.78
  4. Step 4: Simplify right side
    16,290.18x = 205,048,997.99
  5. Step 5: Solve for x
    x = 205,048,997.99/16,290.18
  6. Step 6: Final answer
    x = 12,587.28

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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.