Home / 20,619.56-30,929.34-7,471.95

Finding the Fourth Proportional to 20,619.56, 30,929.34 and 7,471.95

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Solution

The fourth proportional to 20,619.56, 30,929.34 and 7,471.95 is: 11,207.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.56 : 30,929.34 = 7,471.95 : x
  2. Step 2: Convert to fraction form
    20,619.56/30,929.34 = 7,471.95/x
  3. Step 3: Cross multiply
    20,619.56x = 30,929.34 × 7,471.95
  4. Step 4: Simplify right side
    20,619.56x = 231,102,394.05
  5. Step 5: Solve for x
    x = 231,102,394.05/20,619.56
  6. Step 6: Final answer
    x = 11,207.92

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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.