Home / 21,654.78-29,883.60-12,223.95

Finding the Fourth Proportional to 21,654.78, 29,883.60 and 12,223.95

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Solution

The fourth proportional to 21,654.78, 29,883.60 and 12,223.95 is: 16,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.78 : 29,883.60 = 12,223.95 : x
  2. Step 2: Convert to fraction form
    21,654.78/29,883.60 = 12,223.95/x
  3. Step 3: Cross multiply
    21,654.78x = 29,883.60 × 12,223.95
  4. Step 4: Simplify right side
    21,654.78x = 365,295,632.22
  5. Step 5: Solve for x
    x = 365,295,632.22/21,654.78
  6. Step 6: Final answer
    x = 16,869.05

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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.