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Finding the Fourth Proportional to 19,332, 26,679.60 and 11,881.44

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Solution

The fourth proportional to 19,332, 26,679.60 and 11,881.44 is: 16,397.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,332 : 26,679.60 = 11,881.44 : x
  2. Step 2: Convert to fraction form
    19,332/26,679.60 = 11,881.44/x
  3. Step 3: Cross multiply
    19,332x = 26,679.60 × 11,881.44
  4. Step 4: Simplify right side
    19,332x = 316,992,066.62
  5. Step 5: Solve for x
    x = 316,992,066.62/19,332
  6. Step 6: Final answer
    x = 16,397.27

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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.