Home / 20,972.16-31,463.64-6,180.48

Finding the Fourth Proportional to 20,972.16, 31,463.64 and 6,180.48

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Solution

The fourth proportional to 20,972.16, 31,463.64 and 6,180.48 is: 9,272.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.16 : 31,463.64 = 6,180.48 : x
  2. Step 2: Convert to fraction form
    20,972.16/31,463.64 = 6,180.48/x
  3. Step 3: Cross multiply
    20,972.16x = 31,463.64 × 6,180.48
  4. Step 4: Simplify right side
    20,972.16x = 194,460,397.75
  5. Step 5: Solve for x
    x = 194,460,397.75/20,972.16
  6. Step 6: Final answer
    x = 9,272.31

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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.