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Finding the Fourth Proportional to 43,707.67, 65,559.81 and 12,542.92

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Solution

The fourth proportional to 43,707.67, 65,559.81 and 12,542.92 is: 18,813.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,707.67 : 65,559.81 = 12,542.92 : x
  2. Step 2: Convert to fraction form
    43,707.67/65,559.81 = 12,542.92/x
  3. Step 3: Cross multiply
    43,707.67x = 65,559.81 × 12,542.92
  4. Step 4: Simplify right side
    43,707.67x = 822,311,288.15
  5. Step 5: Solve for x
    x = 822,311,288.15/43,707.67
  6. Step 6: Final answer
    x = 18,813.89

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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.