Home / 20,449.79-30,660.32-7,959.28

Finding the Fourth Proportional to 20,449.79, 30,660.32 and 7,959.28

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Solution

The fourth proportional to 20,449.79, 30,660.32 and 7,959.28 is: 11,933.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.79 : 30,660.32 = 7,959.28 : x
  2. Step 2: Convert to fraction form
    20,449.79/30,660.32 = 7,959.28/x
  3. Step 3: Cross multiply
    20,449.79x = 30,660.32 × 7,959.28
  4. Step 4: Simplify right side
    20,449.79x = 244,034,071.77
  5. Step 5: Solve for x
    x = 244,034,071.77/20,449.79
  6. Step 6: Final answer
    x = 11,933.33

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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.