Home / 20,524.95-28,334.85-12,979.02

Finding the Fourth Proportional to 20,524.95, 28,334.85 and 12,979.02

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Solution

The fourth proportional to 20,524.95, 28,334.85 and 12,979.02 is: 17,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,524.95 : 28,334.85 = 12,979.02 : x
  2. Step 2: Convert to fraction form
    20,524.95/28,334.85 = 12,979.02/x
  3. Step 3: Cross multiply
    20,524.95x = 28,334.85 × 12,979.02
  4. Step 4: Simplify right side
    20,524.95x = 367,758,584.85
  5. Step 5: Solve for x
    x = 367,758,584.85/20,524.95
  6. Step 6: Final answer
    x = 17,917.64

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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.