Home / 20,815.10-31,223.28-5,233.04

Finding the Fourth Proportional to 20,815.10, 31,223.28 and 5,233.04

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Solution

The fourth proportional to 20,815.10, 31,223.28 and 5,233.04 is: 7,849.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815.10 : 31,223.28 = 5,233.04 : x
  2. Step 2: Convert to fraction form
    20,815.10/31,223.28 = 5,233.04/x
  3. Step 3: Cross multiply
    20,815.10x = 31,223.28 × 5,233.04
  4. Step 4: Simplify right side
    20,815.10x = 163,392,673.17
  5. Step 5: Solve for x
    x = 163,392,673.17/20,815.10
  6. Step 6: Final answer
    x = 7,849.72

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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.