Home / 20,448.11-30,659.78-13,337.66

Finding the Fourth Proportional to 20,448.11, 30,659.78 and 13,337.66

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Solution

The fourth proportional to 20,448.11, 30,659.78 and 13,337.66 is: 19,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.11 : 30,659.78 = 13,337.66 : x
  2. Step 2: Convert to fraction form
    20,448.11/30,659.78 = 13,337.66/x
  3. Step 3: Cross multiply
    20,448.11x = 30,659.78 × 13,337.66
  4. Step 4: Simplify right side
    20,448.11x = 408,929,831.31
  5. Step 5: Solve for x
    x = 408,929,831.31/20,448.11
  6. Step 6: Final answer
    x = 19,998.41

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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.