Home / 18,711.48-28,067.36-12,850.32

Finding the Fourth Proportional to 18,711.48, 28,067.36 and 12,850.32

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Solution

The fourth proportional to 18,711.48, 28,067.36 and 12,850.32 is: 19,275.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.48 : 28,067.36 = 12,850.32 : x
  2. Step 2: Convert to fraction form
    18,711.48/28,067.36 = 12,850.32/x
  3. Step 3: Cross multiply
    18,711.48x = 28,067.36 × 12,850.32
  4. Step 4: Simplify right side
    18,711.48x = 360,674,557.56
  5. Step 5: Solve for x
    x = 360,674,557.56/18,711.48
  6. Step 6: Final answer
    x = 19,275.58

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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.