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Finding the Fourth Proportional to 19,887.64, 29,841.96 and 8,802.04

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Solution

The fourth proportional to 19,887.64, 29,841.96 and 8,802.04 is: 13,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.64 : 29,841.96 = 8,802.04 : x
  2. Step 2: Convert to fraction form
    19,887.64/29,841.96 = 8,802.04/x
  3. Step 3: Cross multiply
    19,887.64x = 29,841.96 × 8,802.04
  4. Step 4: Simplify right side
    19,887.64x = 262,670,125.60
  5. Step 5: Solve for x
    x = 262,670,125.60/19,887.64
  6. Step 6: Final answer
    x = 13,207.71

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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.