Home / 20,199.83-30,299.28-5,408.75

Finding the Fourth Proportional to 20,199.83, 30,299.28 and 5,408.75

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Solution

The fourth proportional to 20,199.83, 30,299.28 and 5,408.75 is: 8,112.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.83 : 30,299.28 = 5,408.75 : x
  2. Step 2: Convert to fraction form
    20,199.83/30,299.28 = 5,408.75/x
  3. Step 3: Cross multiply
    20,199.83x = 30,299.28 × 5,408.75
  4. Step 4: Simplify right side
    20,199.83x = 163,881,079.20
  5. Step 5: Solve for x
    x = 163,881,079.20/20,199.83
  6. Step 6: Final answer
    x = 8,112.99

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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.