Home / 18,941.76-28,404-12,267.36

Finding the Fourth Proportional to 18,941.76, 28,404 and 12,267.36

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Solution

The fourth proportional to 18,941.76, 28,404 and 12,267.36 is: 18,395.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.76 : 28,404 = 12,267.36 : x
  2. Step 2: Convert to fraction form
    18,941.76/28,404 = 12,267.36/x
  3. Step 3: Cross multiply
    18,941.76x = 28,404 × 12,267.36
  4. Step 4: Simplify right side
    18,941.76x = 348,442,093.44
  5. Step 5: Solve for x
    x = 348,442,093.44/18,941.76
  6. Step 6: Final answer
    x = 18,395.44

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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.