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Finding the Fourth Proportional to 15,149.04, 20,905.60 and 8,525.04

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Solution

The fourth proportional to 15,149.04, 20,905.60 and 8,525.04 is: 11,764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.04 : 20,905.60 = 8,525.04 : x
  2. Step 2: Convert to fraction form
    15,149.04/20,905.60 = 8,525.04/x
  3. Step 3: Cross multiply
    15,149.04x = 20,905.60 × 8,525.04
  4. Step 4: Simplify right side
    15,149.04x = 178,221,076.22
  5. Step 5: Solve for x
    x = 178,221,076.22/15,149.04
  6. Step 6: Final answer
    x = 11,764.51

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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.