Home / 20,290.73-28,009.82-12,335.49

Finding the Fourth Proportional to 20,290.73, 28,009.82 and 12,335.49

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Solution

The fourth proportional to 20,290.73, 28,009.82 and 12,335.49 is: 17,028.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.73 : 28,009.82 = 12,335.49 : x
  2. Step 2: Convert to fraction form
    20,290.73/28,009.82 = 12,335.49/x
  3. Step 3: Cross multiply
    20,290.73x = 28,009.82 × 12,335.49
  4. Step 4: Simplify right side
    20,290.73x = 345,514,885.35
  5. Step 5: Solve for x
    x = 345,514,885.35/20,290.73
  6. Step 6: Final answer
    x = 17,028.22

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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.