Home / 28,680.08-39,578.97-15,934.08

Finding the Fourth Proportional to 28,680.08, 39,578.97 and 15,934.08

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Solution

The fourth proportional to 28,680.08, 39,578.97 and 15,934.08 is: 21,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.08 : 39,578.97 = 15,934.08 : x
  2. Step 2: Convert to fraction form
    28,680.08/39,578.97 = 15,934.08/x
  3. Step 3: Cross multiply
    28,680.08x = 39,578.97 × 15,934.08
  4. Step 4: Simplify right side
    28,680.08x = 630,654,474.30
  5. Step 5: Solve for x
    x = 630,654,474.30/28,680.08
  6. Step 6: Final answer
    x = 21,989.29

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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.