Home / 13,823.65-20,742.77-8,288.11

Finding the Fourth Proportional to 13,823.65, 20,742.77 and 8,288.11

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Solution

The fourth proportional to 13,823.65, 20,742.77 and 8,288.11 is: 12,436.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.65 : 20,742.77 = 8,288.11 : x
  2. Step 2: Convert to fraction form
    13,823.65/20,742.77 = 8,288.11/x
  3. Step 3: Cross multiply
    13,823.65x = 20,742.77 × 8,288.11
  4. Step 4: Simplify right side
    13,823.65x = 171,918,359.46
  5. Step 5: Solve for x
    x = 171,918,359.46/13,823.65
  6. Step 6: Final answer
    x = 12,436.54

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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.