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Finding the Fourth Proportional to 43,864.92, 65,790.90 and 12,696.12

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Solution

The fourth proportional to 43,864.92, 65,790.90 and 12,696.12 is: 19,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,864.92 : 65,790.90 = 12,696.12 : x
  2. Step 2: Convert to fraction form
    43,864.92/65,790.90 = 12,696.12/x
  3. Step 3: Cross multiply
    43,864.92x = 65,790.90 × 12,696.12
  4. Step 4: Simplify right side
    43,864.92x = 835,289,161.31
  5. Step 5: Solve for x
    x = 835,289,161.31/43,864.92
  6. Step 6: Final answer
    x = 19,042.30

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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.