Home / 18,766.24-28,149.36-12,905.12

Finding the Fourth Proportional to 18,766.24, 28,149.36 and 12,905.12

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Solution

The fourth proportional to 18,766.24, 28,149.36 and 12,905.12 is: 19,357.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.24 : 28,149.36 = 12,905.12 : x
  2. Step 2: Convert to fraction form
    18,766.24/28,149.36 = 12,905.12/x
  3. Step 3: Cross multiply
    18,766.24x = 28,149.36 × 12,905.12
  4. Step 4: Simplify right side
    18,766.24x = 363,270,868.72
  5. Step 5: Solve for x
    x = 363,270,868.72/18,766.24
  6. Step 6: Final answer
    x = 19,357.68

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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.