Home / 21,393.82-29,513.65-13,842.61

Finding the Fourth Proportional to 21,393.82, 29,513.65 and 13,842.61

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Solution

The fourth proportional to 21,393.82, 29,513.65 and 13,842.61 is: 19,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.82 : 29,513.65 = 13,842.61 : x
  2. Step 2: Convert to fraction form
    21,393.82/29,513.65 = 13,842.61/x
  3. Step 3: Cross multiply
    21,393.82x = 29,513.65 × 13,842.61
  4. Step 4: Simplify right side
    21,393.82x = 408,545,877.41
  5. Step 5: Solve for x
    x = 408,545,877.41/21,393.82
  6. Step 6: Final answer
    x = 19,096.45

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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.