Home / 20,627.42-28,467.68-12,125.28

Finding the Fourth Proportional to 20,627.42, 28,467.68 and 12,125.28

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Solution

The fourth proportional to 20,627.42, 28,467.68 and 12,125.28 is: 16,733.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.42 : 28,467.68 = 12,125.28 : x
  2. Step 2: Convert to fraction form
    20,627.42/28,467.68 = 12,125.28/x
  3. Step 3: Cross multiply
    20,627.42x = 28,467.68 × 12,125.28
  4. Step 4: Simplify right side
    20,627.42x = 345,178,590.95
  5. Step 5: Solve for x
    x = 345,178,590.95/20,627.42
  6. Step 6: Final answer
    x = 16,733.97

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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.