Home / 13,261.31-19,891.90-5,363.72

Finding the Fourth Proportional to 13,261.31, 19,891.90 and 5,363.72

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Solution

The fourth proportional to 13,261.31, 19,891.90 and 5,363.72 is: 8,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.31 : 19,891.90 = 5,363.72 : x
  2. Step 2: Convert to fraction form
    13,261.31/19,891.90 = 5,363.72/x
  3. Step 3: Cross multiply
    13,261.31x = 19,891.90 × 5,363.72
  4. Step 4: Simplify right side
    13,261.31x = 106,694,581.87
  5. Step 5: Solve for x
    x = 106,694,581.87/13,261.31
  6. Step 6: Final answer
    x = 8,045.55

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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.