Home / 15,481.33-21,364.36-8,407.80

Finding the Fourth Proportional to 15,481.33, 21,364.36 and 8,407.80

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Solution

The fourth proportional to 15,481.33, 21,364.36 and 8,407.80 is: 11,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.33 : 21,364.36 = 8,407.80 : x
  2. Step 2: Convert to fraction form
    15,481.33/21,364.36 = 8,407.80/x
  3. Step 3: Cross multiply
    15,481.33x = 21,364.36 × 8,407.80
  4. Step 4: Simplify right side
    15,481.33x = 179,627,244.99
  5. Step 5: Solve for x
    x = 179,627,244.99/15,481.33
  6. Step 6: Final answer
    x = 11,602.83

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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.