Home / 14,486.20-21,729.30-7,091.80

Finding the Fourth Proportional to 14,486.20, 21,729.30 and 7,091.80

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Solution

The fourth proportional to 14,486.20, 21,729.30 and 7,091.80 is: 10,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.20 : 21,729.30 = 7,091.80 : x
  2. Step 2: Convert to fraction form
    14,486.20/21,729.30 = 7,091.80/x
  3. Step 3: Cross multiply
    14,486.20x = 21,729.30 × 7,091.80
  4. Step 4: Simplify right side
    14,486.20x = 154,099,849.74
  5. Step 5: Solve for x
    x = 154,099,849.74/14,486.20
  6. Step 6: Final answer
    x = 10,637.70

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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.