Home / 22,721.88-31,368.48-15,936.72

Finding the Fourth Proportional to 22,721.88, 31,368.48 and 15,936.72

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Solution

The fourth proportional to 22,721.88, 31,368.48 and 15,936.72 is: 22,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.88 : 31,368.48 = 15,936.72 : x
  2. Step 2: Convert to fraction form
    22,721.88/31,368.48 = 15,936.72/x
  3. Step 3: Cross multiply
    22,721.88x = 31,368.48 × 15,936.72
  4. Step 4: Simplify right side
    22,721.88x = 499,910,682.59
  5. Step 5: Solve for x
    x = 499,910,682.59/22,721.88
  6. Step 6: Final answer
    x = 22,001.29

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1.5x scale

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.