Home / 12,238.85-18,359.49-3,916.77

Finding the Fourth Proportional to 12,238.85, 18,359.49 and 3,916.77

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Solution

The fourth proportional to 12,238.85, 18,359.49 and 3,916.77 is: 5,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.85 : 18,359.49 = 3,916.77 : x
  2. Step 2: Convert to fraction form
    12,238.85/18,359.49 = 3,916.77/x
  3. Step 3: Cross multiply
    12,238.85x = 18,359.49 × 3,916.77
  4. Step 4: Simplify right side
    12,238.85x = 71,909,899.65
  5. Step 5: Solve for x
    x = 71,909,899.65/12,238.85
  6. Step 6: Final answer
    x = 5,875.55

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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.