Home / 22,721.84-31,345.96-13,286.32

Finding the Fourth Proportional to 22,721.84, 31,345.96 and 13,286.32

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Solution

The fourth proportional to 22,721.84, 31,345.96 and 13,286.32 is: 18,329.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.84 : 31,345.96 = 13,286.32 : x
  2. Step 2: Convert to fraction form
    22,721.84/31,345.96 = 13,286.32/x
  3. Step 3: Cross multiply
    22,721.84x = 31,345.96 × 13,286.32
  4. Step 4: Simplify right side
    22,721.84x = 416,472,455.27
  5. Step 5: Solve for x
    x = 416,472,455.27/22,721.84
  6. Step 6: Final answer
    x = 18,329.17

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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.