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Finding the Fourth Proportional to 22,223.92, 30,664.92 and 12,789.04

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Solution

The fourth proportional to 22,223.92, 30,664.92 and 12,789.04 is: 17,646.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,223.92 : 30,664.92 = 12,789.04 : x
  2. Step 2: Convert to fraction form
    22,223.92/30,664.92 = 12,789.04/x
  3. Step 3: Cross multiply
    22,223.92x = 30,664.92 × 12,789.04
  4. Step 4: Simplify right side
    22,223.92x = 392,174,888.48
  5. Step 5: Solve for x
    x = 392,174,888.48/22,223.92
  6. Step 6: Final answer
    x = 17,646.52

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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.