Home / 21,076.08-29,089.07-13,531.95

Finding the Fourth Proportional to 21,076.08, 29,089.07 and 13,531.95

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Solution

The fourth proportional to 21,076.08, 29,089.07 and 13,531.95 is: 18,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.08 : 29,089.07 = 13,531.95 : x
  2. Step 2: Convert to fraction form
    21,076.08/29,089.07 = 13,531.95/x
  3. Step 3: Cross multiply
    21,076.08x = 29,089.07 × 13,531.95
  4. Step 4: Simplify right side
    21,076.08x = 393,631,840.79
  5. Step 5: Solve for x
    x = 393,631,840.79/21,076.08
  6. Step 6: Final answer
    x = 18,676.71

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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.