Home / 13,838.15-19,099.09-8,172.52

Finding the Fourth Proportional to 13,838.15, 19,099.09 and 8,172.52

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Solution

The fourth proportional to 13,838.15, 19,099.09 and 8,172.52 is: 11,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.15 : 19,099.09 = 8,172.52 : x
  2. Step 2: Convert to fraction form
    13,838.15/19,099.09 = 8,172.52/x
  3. Step 3: Cross multiply
    13,838.15x = 19,099.09 × 8,172.52
  4. Step 4: Simplify right side
    13,838.15x = 156,087,695.01
  5. Step 5: Solve for x
    x = 156,087,695.01/13,838.15
  6. Step 6: Final answer
    x = 11,279.52

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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.