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Finding the Fourth Proportional to 26,923.42, 40,391.53 and 8,455.42

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Solution

The fourth proportional to 26,923.42, 40,391.53 and 8,455.42 is: 12,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,923.42 : 40,391.53 = 8,455.42 : x
  2. Step 2: Convert to fraction form
    26,923.42/40,391.53 = 8,455.42/x
  3. Step 3: Cross multiply
    26,923.42x = 40,391.53 × 8,455.42
  4. Step 4: Simplify right side
    26,923.42x = 341,527,350.59
  5. Step 5: Solve for x
    x = 341,527,350.59/26,923.42
  6. Step 6: Final answer
    x = 12,685.14

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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.