Home / 20,301.18-30,428.01-8,611.26

Finding the Fourth Proportional to 20,301.18, 30,428.01 and 8,611.26

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Solution

The fourth proportional to 20,301.18, 30,428.01 and 8,611.26 is: 12,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.18 : 30,428.01 = 8,611.26 : x
  2. Step 2: Convert to fraction form
    20,301.18/30,428.01 = 8,611.26/x
  3. Step 3: Cross multiply
    20,301.18x = 30,428.01 × 8,611.26
  4. Step 4: Simplify right side
    20,301.18x = 262,023,505.39
  5. Step 5: Solve for x
    x = 262,023,505.39/20,301.18
  6. Step 6: Final answer
    x = 12,906.81

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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.