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Finding the Fourth Proportional to 15,195.62, 20,968.54 and 8,820.52

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Solution

The fourth proportional to 15,195.62, 20,968.54 and 8,820.52 is: 12,171.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.62 : 20,968.54 = 8,820.52 : x
  2. Step 2: Convert to fraction form
    15,195.62/20,968.54 = 8,820.52/x
  3. Step 3: Cross multiply
    15,195.62x = 20,968.54 × 8,820.52
  4. Step 4: Simplify right side
    15,195.62x = 184,953,382.34
  5. Step 5: Solve for x
    x = 184,953,382.34/15,195.62
  6. Step 6: Final answer
    x = 12,171.49

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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.