Home / 45,091.80-67,646.20-13,919.76

Finding the Fourth Proportional to 45,091.80, 67,646.20 and 13,919.76

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Solution

The fourth proportional to 45,091.80, 67,646.20 and 13,919.76 is: 20,882.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,091.80 : 67,646.20 = 13,919.76 : x
  2. Step 2: Convert to fraction form
    45,091.80/67,646.20 = 13,919.76/x
  3. Step 3: Cross multiply
    45,091.80x = 67,646.20 × 13,919.76
  4. Step 4: Simplify right side
    45,091.80x = 941,618,868.91
  5. Step 5: Solve for x
    x = 941,618,868.91/45,091.80
  6. Step 6: Final answer
    x = 20,882.26

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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.