Home / 30,481.17-42,067.11-18,545.41

Finding the Fourth Proportional to 30,481.17, 42,067.11 and 18,545.41

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Solution

The fourth proportional to 30,481.17, 42,067.11 and 18,545.41 is: 25,594.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.17 : 42,067.11 = 18,545.41 : x
  2. Step 2: Convert to fraction form
    30,481.17/42,067.11 = 18,545.41/x
  3. Step 3: Cross multiply
    30,481.17x = 42,067.11 × 18,545.41
  4. Step 4: Simplify right side
    30,481.17x = 780,151,802.47
  5. Step 5: Solve for x
    x = 780,151,802.47/30,481.17
  6. Step 6: Final answer
    x = 25,594.55

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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.