Home / 18,821.76-28,194.36-15,103.86

Finding the Fourth Proportional to 18,821.76, 28,194.36 and 15,103.86

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Solution

The fourth proportional to 18,821.76, 28,194.36 and 15,103.86 is: 22,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.76 : 28,194.36 = 15,103.86 : x
  2. Step 2: Convert to fraction form
    18,821.76/28,194.36 = 15,103.86/x
  3. Step 3: Cross multiply
    18,821.76x = 28,194.36 × 15,103.86
  4. Step 4: Simplify right side
    18,821.76x = 425,843,666.23
  5. Step 5: Solve for x
    x = 425,843,666.23/18,821.76
  6. Step 6: Final answer
    x = 22,625.07

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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.