Home / 21,197.78-29,253.04-13,244.61

Finding the Fourth Proportional to 21,197.78, 29,253.04 and 13,244.61

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Solution

The fourth proportional to 21,197.78, 29,253.04 and 13,244.61 is: 18,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.78 : 29,253.04 = 13,244.61 : x
  2. Step 2: Convert to fraction form
    21,197.78/29,253.04 = 13,244.61/x
  3. Step 3: Cross multiply
    21,197.78x = 29,253.04 × 13,244.61
  4. Step 4: Simplify right side
    21,197.78x = 387,445,106.11
  5. Step 5: Solve for x
    x = 387,445,106.11/21,197.78
  6. Step 6: Final answer
    x = 18,277.63

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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.