Home / 36,609.18-54,865.77-20,821.47

Finding the Fourth Proportional to 36,609.18, 54,865.77 and 20,821.47

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Solution

The fourth proportional to 36,609.18, 54,865.77 and 20,821.47 is: 31,204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,609.18 : 54,865.77 = 20,821.47 : x
  2. Step 2: Convert to fraction form
    36,609.18/54,865.77 = 20,821.47/x
  3. Step 3: Cross multiply
    36,609.18x = 54,865.77 × 20,821.47
  4. Step 4: Simplify right side
    36,609.18x = 1,142,385,984.08
  5. Step 5: Solve for x
    x = 1,142,385,984.08/36,609.18
  6. Step 6: Final answer
    x = 31,204.91

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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.