Home / 20,997.20-31,452.60-14,430.80

Finding the Fourth Proportional to 20,997.20, 31,452.60 and 14,430.80

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Solution

The fourth proportional to 20,997.20, 31,452.60 and 14,430.80 is: 21,616.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.20 : 31,452.60 = 14,430.80 : x
  2. Step 2: Convert to fraction form
    20,997.20/31,452.60 = 14,430.80/x
  3. Step 3: Cross multiply
    20,997.20x = 31,452.60 × 14,430.80
  4. Step 4: Simplify right side
    20,997.20x = 453,886,180.08
  5. Step 5: Solve for x
    x = 453,886,180.08/20,997.20
  6. Step 6: Final answer
    x = 21,616.51

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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.