Home / 27,669.49-38,215.76-20,149.45

Finding the Fourth Proportional to 27,669.49, 38,215.76 and 20,149.45

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Solution

The fourth proportional to 27,669.49, 38,215.76 and 20,149.45 is: 27,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,669.49 : 38,215.76 = 20,149.45 : x
  2. Step 2: Convert to fraction form
    27,669.49/38,215.76 = 20,149.45/x
  3. Step 3: Cross multiply
    27,669.49x = 38,215.76 × 20,149.45
  4. Step 4: Simplify right side
    27,669.49x = 770,026,545.33
  5. Step 5: Solve for x
    x = 770,026,545.33/27,669.49
  6. Step 6: Final answer
    x = 27,829.44

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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.