Home / 20,147.19-30,220.75-5,356.11

Finding the Fourth Proportional to 20,147.19, 30,220.75 and 5,356.11

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Solution

The fourth proportional to 20,147.19, 30,220.75 and 5,356.11 is: 8,034.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.19 : 30,220.75 = 5,356.11 : x
  2. Step 2: Convert to fraction form
    20,147.19/30,220.75 = 5,356.11/x
  3. Step 3: Cross multiply
    20,147.19x = 30,220.75 × 5,356.11
  4. Step 4: Simplify right side
    20,147.19x = 161,865,647.89
  5. Step 5: Solve for x
    x = 161,865,647.89/20,147.19
  6. Step 6: Final answer
    x = 8,034.16

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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.