Home / 43,684.67-65,516.18-18,721.89

Finding the Fourth Proportional to 43,684.67, 65,516.18 and 18,721.89

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Solution

The fourth proportional to 43,684.67, 65,516.18 and 18,721.89 is: 28,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,684.67 : 65,516.18 = 18,721.89 : x
  2. Step 2: Convert to fraction form
    43,684.67/65,516.18 = 18,721.89/x
  3. Step 3: Cross multiply
    43,684.67x = 65,516.18 × 18,721.89
  4. Step 4: Simplify right side
    43,684.67x = 1,226,586,621.57
  5. Step 5: Solve for x
    x = 1,226,586,621.57/43,684.67
  6. Step 6: Final answer
    x = 28,078.19

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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.