Home / 20,929.86-28,883.04-11,498.46

Finding the Fourth Proportional to 20,929.86, 28,883.04 and 11,498.46

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Solution

The fourth proportional to 20,929.86, 28,883.04 and 11,498.46 is: 15,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.86 : 28,883.04 = 11,498.46 : x
  2. Step 2: Convert to fraction form
    20,929.86/28,883.04 = 11,498.46/x
  3. Step 3: Cross multiply
    20,929.86x = 28,883.04 × 11,498.46
  4. Step 4: Simplify right side
    20,929.86x = 332,110,480.12
  5. Step 5: Solve for x
    x = 332,110,480.12/20,929.86
  6. Step 6: Final answer
    x = 15,867.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.