Home / 20,981.56-31,472.31-6,200.86

Finding the Fourth Proportional to 20,981.56, 31,472.31 and 6,200.86

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Solution

The fourth proportional to 20,981.56, 31,472.31 and 6,200.86 is: 9,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.56 : 31,472.31 = 6,200.86 : x
  2. Step 2: Convert to fraction form
    20,981.56/31,472.31 = 6,200.86/x
  3. Step 3: Cross multiply
    20,981.56x = 31,472.31 × 6,200.86
  4. Step 4: Simplify right side
    20,981.56x = 195,155,388.19
  5. Step 5: Solve for x
    x = 195,155,388.19/20,981.56
  6. Step 6: Final answer
    x = 9,301.28

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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.