Home / 22,721.92-31,356-12,650.14

Finding the Fourth Proportional to 22,721.92, 31,356 and 12,650.14

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Solution

The fourth proportional to 22,721.92, 31,356 and 12,650.14 is: 17,457.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.92 : 31,356 = 12,650.14 : x
  2. Step 2: Convert to fraction form
    22,721.92/31,356 = 12,650.14/x
  3. Step 3: Cross multiply
    22,721.92x = 31,356 × 12,650.14
  4. Step 4: Simplify right side
    22,721.92x = 396,657,789.84
  5. Step 5: Solve for x
    x = 396,657,789.84/22,721.92
  6. Step 6: Final answer
    x = 17,457.05

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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.