Home / 11,820.87-17,731.76-4,424.56

Finding the Fourth Proportional to 11,820.87, 17,731.76 and 4,424.56

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Solution

The fourth proportional to 11,820.87, 17,731.76 and 4,424.56 is: 6,637.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.87 : 17,731.76 = 4,424.56 : x
  2. Step 2: Convert to fraction form
    11,820.87/17,731.76 = 4,424.56/x
  3. Step 3: Cross multiply
    11,820.87x = 17,731.76 × 4,424.56
  4. Step 4: Simplify right side
    11,820.87x = 78,455,169.57
  5. Step 5: Solve for x
    x = 78,455,169.57/11,820.87
  6. Step 6: Final answer
    x = 6,637.00

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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.