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Finding the Fourth Proportional to 17,650.76, 26,475.80 and 7,120.55

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Solution

The fourth proportional to 17,650.76, 26,475.80 and 7,120.55 is: 10,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,650.76 : 26,475.80 = 7,120.55 : x
  2. Step 2: Convert to fraction form
    17,650.76/26,475.80 = 7,120.55/x
  3. Step 3: Cross multiply
    17,650.76x = 26,475.80 × 7,120.55
  4. Step 4: Simplify right side
    17,650.76x = 188,522,288.28
  5. Step 5: Solve for x
    x = 188,522,288.28/17,650.76
  6. Step 6: Final answer
    x = 10,680.69

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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.