Home / 21,951.74-30,293.60-12,520.91

Finding the Fourth Proportional to 21,951.74, 30,293.60 and 12,520.91

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Solution

The fourth proportional to 21,951.74, 30,293.60 and 12,520.91 is: 17,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.74 : 30,293.60 = 12,520.91 : x
  2. Step 2: Convert to fraction form
    21,951.74/30,293.60 = 12,520.91/x
  3. Step 3: Cross multiply
    21,951.74x = 30,293.60 × 12,520.91
  4. Step 4: Simplify right side
    21,951.74x = 379,303,452.31
  5. Step 5: Solve for x
    x = 379,303,452.31/21,951.74
  6. Step 6: Final answer
    x = 17,278.97

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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.