Home / 20,620.50-30,948.97-13,580.79

Finding the Fourth Proportional to 20,620.50, 30,948.97 and 13,580.79

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Solution

The fourth proportional to 20,620.50, 30,948.97 and 13,580.79 is: 20,383.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.50 : 30,948.97 = 13,580.79 : x
  2. Step 2: Convert to fraction form
    20,620.50/30,948.97 = 13,580.79/x
  3. Step 3: Cross multiply
    20,620.50x = 30,948.97 × 13,580.79
  4. Step 4: Simplify right side
    20,620.50x = 420,311,462.29
  5. Step 5: Solve for x
    x = 420,311,462.29/20,620.50
  6. Step 6: Final answer
    x = 20,383.18

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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.