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Finding the Fourth Proportional to 43,874.78, 65,812.12 and 14,292.57

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Solution

The fourth proportional to 43,874.78, 65,812.12 and 14,292.57 is: 21,438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,874.78 : 65,812.12 = 14,292.57 : x
  2. Step 2: Convert to fraction form
    43,874.78/65,812.12 = 14,292.57/x
  3. Step 3: Cross multiply
    43,874.78x = 65,812.12 × 14,292.57
  4. Step 4: Simplify right side
    43,874.78x = 940,624,331.95
  5. Step 5: Solve for x
    x = 940,624,331.95/43,874.78
  6. Step 6: Final answer
    x = 21,438.84

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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.