Home / 28,680.18-39,578.39-15,933.39

Finding the Fourth Proportional to 28,680.18, 39,578.39 and 15,933.39

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Solution

The fourth proportional to 28,680.18, 39,578.39 and 15,933.39 is: 21,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.18 : 39,578.39 = 15,933.39 : x
  2. Step 2: Convert to fraction form
    28,680.18/39,578.39 = 15,933.39/x
  3. Step 3: Cross multiply
    28,680.18x = 39,578.39 × 15,933.39
  4. Step 4: Simplify right side
    28,680.18x = 630,617,843.78
  5. Step 5: Solve for x
    x = 630,617,843.78/28,680.18
  6. Step 6: Final answer
    x = 21,987.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.