Home / 36,821.61-55,239.30-20,172.47

Finding the Fourth Proportional to 36,821.61, 55,239.30 and 20,172.47

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Solution

The fourth proportional to 36,821.61, 55,239.30 and 20,172.47 is: 30,262.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,821.61 : 55,239.30 = 20,172.47 : x
  2. Step 2: Convert to fraction form
    36,821.61/55,239.30 = 20,172.47/x
  3. Step 3: Cross multiply
    36,821.61x = 55,239.30 × 20,172.47
  4. Step 4: Simplify right side
    36,821.61x = 1,114,312,845.87
  5. Step 5: Solve for x
    x = 1,114,312,845.87/36,821.61
  6. Step 6: Final answer
    x = 30,262.47

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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.