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Finding the Fourth Proportional to 14,272.50, 19,696.05 and 7,984.88

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Solution

The fourth proportional to 14,272.50, 19,696.05 and 7,984.88 is: 11,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.50 : 19,696.05 = 7,984.88 : x
  2. Step 2: Convert to fraction form
    14,272.50/19,696.05 = 7,984.88/x
  3. Step 3: Cross multiply
    14,272.50x = 19,696.05 × 7,984.88
  4. Step 4: Simplify right side
    14,272.50x = 157,270,497.24
  5. Step 5: Solve for x
    x = 157,270,497.24/14,272.50
  6. Step 6: Final answer
    x = 11,019.13

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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.