Home / 15,449.05-21,319.83-8,375.49

Finding the Fourth Proportional to 15,449.05, 21,319.83 and 8,375.49

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Solution

The fourth proportional to 15,449.05, 21,319.83 and 8,375.49 is: 11,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.05 : 21,319.83 = 8,375.49 : x
  2. Step 2: Convert to fraction form
    15,449.05/21,319.83 = 8,375.49/x
  3. Step 3: Cross multiply
    15,449.05x = 21,319.83 × 8,375.49
  4. Step 4: Simplify right side
    15,449.05x = 178,563,874.49
  5. Step 5: Solve for x
    x = 178,563,874.49/15,449.05
  6. Step 6: Final answer
    x = 11,558.25

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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.