Home / 20,202.20-30,335.70-13,657.40

Finding the Fourth Proportional to 20,202.20, 30,335.70 and 13,657.40

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Solution

The fourth proportional to 20,202.20, 30,335.70 and 13,657.40 is: 20,508.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.20 : 30,335.70 = 13,657.40 : x
  2. Step 2: Convert to fraction form
    20,202.20/30,335.70 = 13,657.40/x
  3. Step 3: Cross multiply
    20,202.20x = 30,335.70 × 13,657.40
  4. Step 4: Simplify right side
    20,202.20x = 414,306,789.18
  5. Step 5: Solve for x
    x = 414,306,789.18/20,202.20
  6. Step 6: Final answer
    x = 20,508.00

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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.