Home / 22,712.54-31,342.81-12,640.94

Finding the Fourth Proportional to 22,712.54, 31,342.81 and 12,640.94

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Solution

The fourth proportional to 22,712.54, 31,342.81 and 12,640.94 is: 17,444.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,712.54 : 31,342.81 = 12,640.94 : x
  2. Step 2: Convert to fraction form
    22,712.54/31,342.81 = 12,640.94/x
  3. Step 3: Cross multiply
    22,712.54x = 31,342.81 × 12,640.94
  4. Step 4: Simplify right side
    22,712.54x = 396,202,392.33
  5. Step 5: Solve for x
    x = 396,202,392.33/22,712.54
  6. Step 6: Final answer
    x = 17,444.22

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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.