Home / 28,479.87-39,272.04-19,540.44

Finding the Fourth Proportional to 28,479.87, 39,272.04 and 19,540.44

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Solution

The fourth proportional to 28,479.87, 39,272.04 and 19,540.44 is: 26,945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.87 : 39,272.04 = 19,540.44 : x
  2. Step 2: Convert to fraction form
    28,479.87/39,272.04 = 19,540.44/x
  3. Step 3: Cross multiply
    28,479.87x = 39,272.04 × 19,540.44
  4. Step 4: Simplify right side
    28,479.87x = 767,392,941.30
  5. Step 5: Solve for x
    x = 767,392,941.30/28,479.87
  6. Step 6: Final answer
    x = 26,945.10

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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.