Home / 20,627.17-28,458.99-12,126.58

Finding the Fourth Proportional to 20,627.17, 28,458.99 and 12,126.58

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Solution

The fourth proportional to 20,627.17, 28,458.99 and 12,126.58 is: 16,730.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.17 : 28,458.99 = 12,126.58 : x
  2. Step 2: Convert to fraction form
    20,627.17/28,458.99 = 12,126.58/x
  3. Step 3: Cross multiply
    20,627.17x = 28,458.99 × 12,126.58
  4. Step 4: Simplify right side
    20,627.17x = 345,110,218.95
  5. Step 5: Solve for x
    x = 345,110,218.95/20,627.17
  6. Step 6: Final answer
    x = 16,730.86

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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.