Home / 18,913.42-28,370.94-11,116.36

Finding the Fourth Proportional to 18,913.42, 28,370.94 and 11,116.36

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Solution

The fourth proportional to 18,913.42, 28,370.94 and 11,116.36 is: 16,675.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.42 : 28,370.94 = 11,116.36 : x
  2. Step 2: Convert to fraction form
    18,913.42/28,370.94 = 11,116.36/x
  3. Step 3: Cross multiply
    18,913.42x = 28,370.94 × 11,116.36
  4. Step 4: Simplify right side
    18,913.42x = 315,381,582.58
  5. Step 5: Solve for x
    x = 315,381,582.58/18,913.42
  6. Step 6: Final answer
    x = 16,675.02

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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.