Home / 18,811.86-28,199.52-6,962.28

Finding the Fourth Proportional to 18,811.86, 28,199.52 and 6,962.28

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Solution

The fourth proportional to 18,811.86, 28,199.52 and 6,962.28 is: 10,436.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.86 : 28,199.52 = 6,962.28 : x
  2. Step 2: Convert to fraction form
    18,811.86/28,199.52 = 6,962.28/x
  3. Step 3: Cross multiply
    18,811.86x = 28,199.52 × 6,962.28
  4. Step 4: Simplify right side
    18,811.86x = 196,332,954.11
  5. Step 5: Solve for x
    x = 196,332,954.11/18,811.86
  6. Step 6: Final answer
    x = 10,436.66

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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.