Home / 20,268.99-30,378.11-10,885.95

Finding the Fourth Proportional to 20,268.99, 30,378.11 and 10,885.95

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Solution

The fourth proportional to 20,268.99, 30,378.11 and 10,885.95 is: 16,315.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.99 : 30,378.11 = 10,885.95 : x
  2. Step 2: Convert to fraction form
    20,268.99/30,378.11 = 10,885.95/x
  3. Step 3: Cross multiply
    20,268.99x = 30,378.11 × 10,885.95
  4. Step 4: Simplify right side
    20,268.99x = 330,694,532.12
  5. Step 5: Solve for x
    x = 330,694,532.12/20,268.99
  6. Step 6: Final answer
    x = 16,315.29

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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.