Home / 20,072.16-30,111.62-7,422.66

Finding the Fourth Proportional to 20,072.16, 30,111.62 and 7,422.66

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Solution

The fourth proportional to 20,072.16, 30,111.62 and 7,422.66 is: 11,135.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.16 : 30,111.62 = 7,422.66 : x
  2. Step 2: Convert to fraction form
    20,072.16/30,111.62 = 7,422.66/x
  3. Step 3: Cross multiply
    20,072.16x = 30,111.62 × 7,422.66
  4. Step 4: Simplify right side
    20,072.16x = 223,508,317.31
  5. Step 5: Solve for x
    x = 223,508,317.31/20,072.16
  6. Step 6: Final answer
    x = 11,135.24

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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.