Home / 13,135.78-19,706.64-4,371.04

Finding the Fourth Proportional to 13,135.78, 19,706.64 and 4,371.04

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Solution

The fourth proportional to 13,135.78, 19,706.64 and 4,371.04 is: 6,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.78 : 19,706.64 = 4,371.04 : x
  2. Step 2: Convert to fraction form
    13,135.78/19,706.64 = 4,371.04/x
  3. Step 3: Cross multiply
    13,135.78x = 19,706.64 × 4,371.04
  4. Step 4: Simplify right side
    13,135.78x = 86,138,511.71
  5. Step 5: Solve for x
    x = 86,138,511.71/13,135.78
  6. Step 6: Final answer
    x = 6,557.55

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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.