Home / 13,251.65-19,875.33-3,390.39

Finding the Fourth Proportional to 13,251.65, 19,875.33 and 3,390.39

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Solution

The fourth proportional to 13,251.65, 19,875.33 and 3,390.39 is: 5,085.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.65 : 19,875.33 = 3,390.39 : x
  2. Step 2: Convert to fraction form
    13,251.65/19,875.33 = 3,390.39/x
  3. Step 3: Cross multiply
    13,251.65x = 19,875.33 × 3,390.39
  4. Step 4: Simplify right side
    13,251.65x = 67,385,120.08
  5. Step 5: Solve for x
    x = 67,385,120.08/13,251.65
  6. Step 6: Final answer
    x = 5,085.04

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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.