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Finding the Fourth Proportional to 15,195.96, 20,951.22 and 12,925.08

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Solution

The fourth proportional to 15,195.96, 20,951.22 and 12,925.08 is: 17,820.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.96 : 20,951.22 = 12,925.08 : x
  2. Step 2: Convert to fraction form
    15,195.96/20,951.22 = 12,925.08/x
  3. Step 3: Cross multiply
    15,195.96x = 20,951.22 × 12,925.08
  4. Step 4: Simplify right side
    15,195.96x = 270,796,194.60
  5. Step 5: Solve for x
    x = 270,796,194.60/15,195.96
  6. Step 6: Final answer
    x = 17,820.28

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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.