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Finding the Fourth Proportional to 22,272.20, 31,239.40 and 22,272.20

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Solution

The fourth proportional to 22,272.20, 31,239.40 and 22,272.20 is: 31,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,272.20 : 31,239.40 = 22,272.20 : x
  2. Step 2: Convert to fraction form
    22,272.20/31,239.40 = 22,272.20/x
  3. Step 3: Cross multiply
    22,272.20x = 31,239.40 × 22,272.20
  4. Step 4: Simplify right side
    22,272.20x = 695,770,164.68
  5. Step 5: Solve for x
    x = 695,770,164.68/22,272.20
  6. Step 6: Final answer
    x = 31,239.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.