Home / 18,729.23-28,089.99-5,578.07

Finding the Fourth Proportional to 18,729.23, 28,089.99 and 5,578.07

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Solution

The fourth proportional to 18,729.23, 28,089.99 and 5,578.07 is: 8,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.23 : 28,089.99 = 5,578.07 : x
  2. Step 2: Convert to fraction form
    18,729.23/28,089.99 = 5,578.07/x
  3. Step 3: Cross multiply
    18,729.23x = 28,089.99 × 5,578.07
  4. Step 4: Simplify right side
    18,729.23x = 156,687,790.07
  5. Step 5: Solve for x
    x = 156,687,790.07/18,729.23
  6. Step 6: Final answer
    x = 8,365.95

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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.