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Finding the Fourth Proportional to 20,127, 30,161.32 and 11,343.22

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Solution

The fourth proportional to 20,127, 30,161.32 and 11,343.22 is: 16,998.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127 : 30,161.32 = 11,343.22 : x
  2. Step 2: Convert to fraction form
    20,127/30,161.32 = 11,343.22/x
  3. Step 3: Cross multiply
    20,127x = 30,161.32 × 11,343.22
  4. Step 4: Simplify right side
    20,127x = 342,126,488.25
  5. Step 5: Solve for x
    x = 342,126,488.25/20,127
  6. Step 6: Final answer
    x = 16,998.38

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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.