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Finding the Fourth Proportional to 43,379.16, 65,073.08 and 11,789.68

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Solution

The fourth proportional to 43,379.16, 65,073.08 and 11,789.68 is: 17,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,379.16 : 65,073.08 = 11,789.68 : x
  2. Step 2: Convert to fraction form
    43,379.16/65,073.08 = 11,789.68/x
  3. Step 3: Cross multiply
    43,379.16x = 65,073.08 × 11,789.68
  4. Step 4: Simplify right side
    43,379.16x = 767,190,789.81
  5. Step 5: Solve for x
    x = 767,190,789.81/43,379.16
  6. Step 6: Final answer
    x = 17,685.70

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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.