Home / 13,348.71-20,022.81-3,988.75

Finding the Fourth Proportional to 13,348.71, 20,022.81 and 3,988.75

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Solution

The fourth proportional to 13,348.71, 20,022.81 and 3,988.75 is: 5,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.71 : 20,022.81 = 3,988.75 : x
  2. Step 2: Convert to fraction form
    13,348.71/20,022.81 = 3,988.75/x
  3. Step 3: Cross multiply
    13,348.71x = 20,022.81 × 3,988.75
  4. Step 4: Simplify right side
    13,348.71x = 79,865,983.39
  5. Step 5: Solve for x
    x = 79,865,983.39/13,348.71
  6. Step 6: Final answer
    x = 5,983.05

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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.