Home / 15,001.22-20,701.32-8,287.49

Finding the Fourth Proportional to 15,001.22, 20,701.32 and 8,287.49

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Solution

The fourth proportional to 15,001.22, 20,701.32 and 8,287.49 is: 11,436.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.22 : 20,701.32 = 8,287.49 : x
  2. Step 2: Convert to fraction form
    15,001.22/20,701.32 = 8,287.49/x
  3. Step 3: Cross multiply
    15,001.22x = 20,701.32 × 8,287.49
  4. Step 4: Simplify right side
    15,001.22x = 171,561,982.49
  5. Step 5: Solve for x
    x = 171,561,982.49/15,001.22
  6. Step 6: Final answer
    x = 11,436.54

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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.