Home / 15,515.25-21,409.43-8,798.73

Finding the Fourth Proportional to 15,515.25, 21,409.43 and 8,798.73

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Solution

The fourth proportional to 15,515.25, 21,409.43 and 8,798.73 is: 12,141.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.25 : 21,409.43 = 8,798.73 : x
  2. Step 2: Convert to fraction form
    15,515.25/21,409.43 = 8,798.73/x
  3. Step 3: Cross multiply
    15,515.25x = 21,409.43 × 8,798.73
  4. Step 4: Simplify right side
    15,515.25x = 188,375,750.03
  5. Step 5: Solve for x
    x = 188,375,750.03/15,515.25
  6. Step 6: Final answer
    x = 12,141.33

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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.