Home / 20,433.54-28,179.45-12,877.86

Finding the Fourth Proportional to 20,433.54, 28,179.45 and 12,877.86

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Solution

The fourth proportional to 20,433.54, 28,179.45 and 12,877.86 is: 17,759.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.54 : 28,179.45 = 12,877.86 : x
  2. Step 2: Convert to fraction form
    20,433.54/28,179.45 = 12,877.86/x
  3. Step 3: Cross multiply
    20,433.54x = 28,179.45 × 12,877.86
  4. Step 4: Simplify right side
    20,433.54x = 362,891,011.98
  5. Step 5: Solve for x
    x = 362,891,011.98/20,433.54
  6. Step 6: Final answer
    x = 17,759.58

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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.