Home / 21,060.13-31,584.79-9,963.85

Finding the Fourth Proportional to 21,060.13, 31,584.79 and 9,963.85

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Solution

The fourth proportional to 21,060.13, 31,584.79 and 9,963.85 is: 14,943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.13 : 31,584.79 = 9,963.85 : x
  2. Step 2: Convert to fraction form
    21,060.13/31,584.79 = 9,963.85/x
  3. Step 3: Cross multiply
    21,060.13x = 31,584.79 × 9,963.85
  4. Step 4: Simplify right side
    21,060.13x = 314,706,109.84
  5. Step 5: Solve for x
    x = 314,706,109.84/21,060.13
  6. Step 6: Final answer
    x = 14,943.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.