Home / 13,988.23-20,982.35-3,600.79

Finding the Fourth Proportional to 13,988.23, 20,982.35 and 3,600.79

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Solution

The fourth proportional to 13,988.23, 20,982.35 and 3,600.79 is: 5,401.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.23 : 20,982.35 = 3,600.79 : x
  2. Step 2: Convert to fraction form
    13,988.23/20,982.35 = 3,600.79/x
  3. Step 3: Cross multiply
    13,988.23x = 20,982.35 × 3,600.79
  4. Step 4: Simplify right side
    13,988.23x = 75,553,036.06
  5. Step 5: Solve for x
    x = 75,553,036.06/13,988.23
  6. Step 6: Final answer
    x = 5,401.19

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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.