Home / 20,199.40-30,288.30-8,499.40

Finding the Fourth Proportional to 20,199.40, 30,288.30 and 8,499.40

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Solution

The fourth proportional to 20,199.40, 30,288.30 and 8,499.40 is: 12,744.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.40 : 30,288.30 = 8,499.40 : x
  2. Step 2: Convert to fraction form
    20,199.40/30,288.30 = 8,499.40/x
  3. Step 3: Cross multiply
    20,199.40x = 30,288.30 × 8,499.40
  4. Step 4: Simplify right side
    20,199.40x = 257,432,377.02
  5. Step 5: Solve for x
    x = 257,432,377.02/20,199.40
  6. Step 6: Final answer
    x = 12,744.56

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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.