Home / 20,902.16-31,353.96-6,862.16

Finding the Fourth Proportional to 20,902.16, 31,353.96 and 6,862.16

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Solution

The fourth proportional to 20,902.16, 31,353.96 and 6,862.16 is: 10,293.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.16 : 31,353.96 = 6,862.16 : x
  2. Step 2: Convert to fraction form
    20,902.16/31,353.96 = 6,862.16/x
  3. Step 3: Cross multiply
    20,902.16x = 31,353.96 × 6,862.16
  4. Step 4: Simplify right side
    20,902.16x = 215,155,890.15
  5. Step 5: Solve for x
    x = 215,155,890.15/20,902.16
  6. Step 6: Final answer
    x = 10,293.48

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1.5x scale

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.