Home / 13,348.66-20,022.72-3,988.70

Finding the Fourth Proportional to 13,348.66, 20,022.72 and 3,988.70

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Solution

The fourth proportional to 13,348.66, 20,022.72 and 3,988.70 is: 5,982.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.66 : 20,022.72 = 3,988.70 : x
  2. Step 2: Convert to fraction form
    13,348.66/20,022.72 = 3,988.70/x
  3. Step 3: Cross multiply
    13,348.66x = 20,022.72 × 3,988.70
  4. Step 4: Simplify right side
    13,348.66x = 79,864,658.36
  5. Step 5: Solve for x
    x = 79,864,658.36/13,348.66
  6. Step 6: Final answer
    x = 5,982.97

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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.