Home / 13,281.04-19,916.70-3,918.66

Finding the Fourth Proportional to 13,281.04, 19,916.70 and 3,918.66

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Solution

The fourth proportional to 13,281.04, 19,916.70 and 3,918.66 is: 5,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.04 : 19,916.70 = 3,918.66 : x
  2. Step 2: Convert to fraction form
    13,281.04/19,916.70 = 3,918.66/x
  3. Step 3: Cross multiply
    13,281.04x = 19,916.70 × 3,918.66
  4. Step 4: Simplify right side
    13,281.04x = 78,046,775.62
  5. Step 5: Solve for x
    x = 78,046,775.62/13,281.04
  6. Step 6: Final answer
    x = 5,876.56

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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.