Home / 45,499.28-68,249.08-13,909.21

Finding the Fourth Proportional to 45,499.28, 68,249.08 and 13,909.21

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Solution

The fourth proportional to 45,499.28, 68,249.08 and 13,909.21 is: 20,863.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,499.28 : 68,249.08 = 13,909.21 : x
  2. Step 2: Convert to fraction form
    45,499.28/68,249.08 = 13,909.21/x
  3. Step 3: Cross multiply
    45,499.28x = 68,249.08 × 13,909.21
  4. Step 4: Simplify right side
    45,499.28x = 949,290,716.48
  5. Step 5: Solve for x
    x = 949,290,716.48/45,499.28
  6. Step 6: Final answer
    x = 20,863.86

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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.