Home / 30,278.88-45,367.29-19,198.08

Finding the Fourth Proportional to 30,278.88, 45,367.29 and 19,198.08

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Solution

The fourth proportional to 30,278.88, 45,367.29 and 19,198.08 is: 28,764.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.88 : 45,367.29 = 19,198.08 : x
  2. Step 2: Convert to fraction form
    30,278.88/45,367.29 = 19,198.08/x
  3. Step 3: Cross multiply
    30,278.88x = 45,367.29 × 19,198.08
  4. Step 4: Simplify right side
    30,278.88x = 870,964,862.80
  5. Step 5: Solve for x
    x = 870,964,862.80/30,278.88
  6. Step 6: Final answer
    x = 28,764.76

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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.