Home / 20,518-30,781.84-6,667.04

Finding the Fourth Proportional to 20,518, 30,781.84 and 6,667.04

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Solution

The fourth proportional to 20,518, 30,781.84 and 6,667.04 is: 10,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518 : 30,781.84 = 6,667.04 : x
  2. Step 2: Convert to fraction form
    20,518/30,781.84 = 6,667.04/x
  3. Step 3: Cross multiply
    20,518x = 30,781.84 × 6,667.04
  4. Step 4: Simplify right side
    20,518x = 205,223,758.55
  5. Step 5: Solve for x
    x = 205,223,758.55/20,518
  6. Step 6: Final answer
    x = 10,002.13

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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.