Home / 45,020.55-67,538.12-13,855.80

Finding the Fourth Proportional to 45,020.55, 67,538.12 and 13,855.80

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Solution

The fourth proportional to 45,020.55, 67,538.12 and 13,855.80 is: 20,785.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,020.55 : 67,538.12 = 13,855.80 : x
  2. Step 2: Convert to fraction form
    45,020.55/67,538.12 = 13,855.80/x
  3. Step 3: Cross multiply
    45,020.55x = 67,538.12 × 13,855.80
  4. Step 4: Simplify right side
    45,020.55x = 935,794,683.10
  5. Step 5: Solve for x
    x = 935,794,683.10/45,020.55
  6. Step 6: Final answer
    x = 20,785.95

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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.