Home / 22,672.14-31,288.26-13,721.28

Finding the Fourth Proportional to 22,672.14, 31,288.26 and 13,721.28

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Solution

The fourth proportional to 22,672.14, 31,288.26 and 13,721.28 is: 18,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,672.14 : 31,288.26 = 13,721.28 : x
  2. Step 2: Convert to fraction form
    22,672.14/31,288.26 = 13,721.28/x
  3. Step 3: Cross multiply
    22,672.14x = 31,288.26 × 13,721.28
  4. Step 4: Simplify right side
    22,672.14x = 429,314,976.17
  5. Step 5: Solve for x
    x = 429,314,976.17/22,672.14
  6. Step 6: Final answer
    x = 18,935.79

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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.