Home / 20,221.10-30,324.45-9,133.10

Finding the Fourth Proportional to 20,221.10, 30,324.45 and 9,133.10

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Solution

The fourth proportional to 20,221.10, 30,324.45 and 9,133.10 is: 13,696.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.10 : 30,324.45 = 9,133.10 : x
  2. Step 2: Convert to fraction form
    20,221.10/30,324.45 = 9,133.10/x
  3. Step 3: Cross multiply
    20,221.10x = 30,324.45 × 9,133.10
  4. Step 4: Simplify right side
    20,221.10x = 276,956,234.30
  5. Step 5: Solve for x
    x = 276,956,234.30/20,221.10
  6. Step 6: Final answer
    x = 13,696.40

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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.