Home / 22,712.68-31,340.70-12,638.44

Finding the Fourth Proportional to 22,712.68, 31,340.70 and 12,638.44

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Solution

The fourth proportional to 22,712.68, 31,340.70 and 12,638.44 is: 17,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,712.68 : 31,340.70 = 12,638.44 : x
  2. Step 2: Convert to fraction form
    22,712.68/31,340.70 = 12,638.44/x
  3. Step 3: Cross multiply
    22,712.68x = 31,340.70 × 12,638.44
  4. Step 4: Simplify right side
    22,712.68x = 396,097,556.51
  5. Step 5: Solve for x
    x = 396,097,556.51/22,712.68
  6. Step 6: Final answer
    x = 17,439.49

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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.