Home / 18,882.05-28,326.51-7,782.57

Finding the Fourth Proportional to 18,882.05, 28,326.51 and 7,782.57

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Solution

The fourth proportional to 18,882.05, 28,326.51 and 7,782.57 is: 11,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.05 : 28,326.51 = 7,782.57 : x
  2. Step 2: Convert to fraction form
    18,882.05/28,326.51 = 7,782.57/x
  3. Step 3: Cross multiply
    18,882.05x = 28,326.51 × 7,782.57
  4. Step 4: Simplify right side
    18,882.05x = 220,453,046.93
  5. Step 5: Solve for x
    x = 220,453,046.93/18,882.05
  6. Step 6: Final answer
    x = 11,675.27

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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.