Home / 15,229.58-21,017.87-8,515.09

Finding the Fourth Proportional to 15,229.58, 21,017.87 and 8,515.09

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Solution

The fourth proportional to 15,229.58, 21,017.87 and 8,515.09 is: 11,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.58 : 21,017.87 = 8,515.09 : x
  2. Step 2: Convert to fraction form
    15,229.58/21,017.87 = 8,515.09/x
  3. Step 3: Cross multiply
    15,229.58x = 21,017.87 × 8,515.09
  4. Step 4: Simplify right side
    15,229.58x = 178,969,054.66
  5. Step 5: Solve for x
    x = 178,969,054.66/15,229.58
  6. Step 6: Final answer
    x = 11,751.41

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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.