Home / 13,280.52-19,916.10-3,918.04

Finding the Fourth Proportional to 13,280.52, 19,916.10 and 3,918.04

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Solution

The fourth proportional to 13,280.52, 19,916.10 and 3,918.04 is: 5,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.52 : 19,916.10 = 3,918.04 : x
  2. Step 2: Convert to fraction form
    13,280.52/19,916.10 = 3,918.04/x
  3. Step 3: Cross multiply
    13,280.52x = 19,916.10 × 3,918.04
  4. Step 4: Simplify right side
    13,280.52x = 78,032,076.44
  5. Step 5: Solve for x
    x = 78,032,076.44/13,280.52
  6. Step 6: Final answer
    x = 5,875.68

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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.