Home / 20,373.05-30,420.20-18,250.99

Finding the Fourth Proportional to 20,373.05, 30,420.20 and 18,250.99

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Solution

The fourth proportional to 20,373.05, 30,420.20 and 18,250.99 is: 27,251.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.05 : 30,420.20 = 18,250.99 : x
  2. Step 2: Convert to fraction form
    20,373.05/30,420.20 = 18,250.99/x
  3. Step 3: Cross multiply
    20,373.05x = 30,420.20 × 18,250.99
  4. Step 4: Simplify right side
    20,373.05x = 555,198,735.57
  5. Step 5: Solve for x
    x = 555,198,735.57/20,373.05
  6. Step 6: Final answer
    x = 27,251.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.