Home / 22,650.69-31,256.89-12,579.78

Finding the Fourth Proportional to 22,650.69, 31,256.89 and 12,579.78

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Solution

The fourth proportional to 22,650.69, 31,256.89 and 12,579.78 is: 17,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,650.69 : 31,256.89 = 12,579.78 : x
  2. Step 2: Convert to fraction form
    22,650.69/31,256.89 = 12,579.78/x
  3. Step 3: Cross multiply
    22,650.69x = 31,256.89 × 12,579.78
  4. Step 4: Simplify right side
    22,650.69x = 393,204,799.68
  5. Step 5: Solve for x
    x = 393,204,799.68/22,650.69
  6. Step 6: Final answer
    x = 17,359.51

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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.