Home / 22,793.39-31,455.47-12,721.78

Finding the Fourth Proportional to 22,793.39, 31,455.47 and 12,721.78

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Solution

The fourth proportional to 22,793.39, 31,455.47 and 12,721.78 is: 17,556.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,793.39 : 31,455.47 = 12,721.78 : x
  2. Step 2: Convert to fraction form
    22,793.39/31,455.47 = 12,721.78/x
  3. Step 3: Cross multiply
    22,793.39x = 31,455.47 × 12,721.78
  4. Step 4: Simplify right side
    22,793.39x = 400,169,569.14
  5. Step 5: Solve for x
    x = 400,169,569.14/22,793.39
  6. Step 6: Final answer
    x = 17,556.39

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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.