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Finding the Fourth Proportional to 17,629.80, 26,445.90 and 5,149.80

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Solution

The fourth proportional to 17,629.80, 26,445.90 and 5,149.80 is: 7,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,629.80 : 26,445.90 = 5,149.80 : x
  2. Step 2: Convert to fraction form
    17,629.80/26,445.90 = 5,149.80/x
  3. Step 3: Cross multiply
    17,629.80x = 26,445.90 × 5,149.80
  4. Step 4: Simplify right side
    17,629.80x = 136,191,095.82
  5. Step 5: Solve for x
    x = 136,191,095.82/17,629.80
  6. Step 6: Final answer
    x = 7,725.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.