Home / 13,856.90-19,118.04-8,191.82

Finding the Fourth Proportional to 13,856.90, 19,118.04 and 8,191.82

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Solution

The fourth proportional to 13,856.90, 19,118.04 and 8,191.82 is: 11,302.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.90 : 19,118.04 = 8,191.82 : x
  2. Step 2: Convert to fraction form
    13,856.90/19,118.04 = 8,191.82/x
  3. Step 3: Cross multiply
    13,856.90x = 19,118.04 × 8,191.82
  4. Step 4: Simplify right side
    13,856.90x = 156,611,542.43
  5. Step 5: Solve for x
    x = 156,611,542.43/13,856.90
  6. Step 6: Final answer
    x = 11,302.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.