Home / 20,163.60-30,229.29-7,681.14

Finding the Fourth Proportional to 20,163.60, 30,229.29 and 7,681.14

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Solution

The fourth proportional to 20,163.60, 30,229.29 and 7,681.14 is: 11,515.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.60 : 30,229.29 = 7,681.14 : x
  2. Step 2: Convert to fraction form
    20,163.60/30,229.29 = 7,681.14/x
  3. Step 3: Cross multiply
    20,163.60x = 30,229.29 × 7,681.14
  4. Step 4: Simplify right side
    20,163.60x = 232,195,408.59
  5. Step 5: Solve for x
    x = 232,195,408.59/20,163.60
  6. Step 6: Final answer
    x = 11,515.57

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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.