Home / 20,169.10-30,254.04-7,345.78

Finding the Fourth Proportional to 20,169.10, 30,254.04 and 7,345.78

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Solution

The fourth proportional to 20,169.10, 30,254.04 and 7,345.78 is: 11,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.10 : 30,254.04 = 7,345.78 : x
  2. Step 2: Convert to fraction form
    20,169.10/30,254.04 = 7,345.78/x
  3. Step 3: Cross multiply
    20,169.10x = 30,254.04 × 7,345.78
  4. Step 4: Simplify right side
    20,169.10x = 222,239,521.95
  5. Step 5: Solve for x
    x = 222,239,521.95/20,169.10
  6. Step 6: Final answer
    x = 11,018.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.