Home / 15,329.22-21,170.07-13,200.54

Finding the Fourth Proportional to 15,329.22, 21,170.07 and 13,200.54

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Solution

The fourth proportional to 15,329.22, 21,170.07 and 13,200.54 is: 18,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.22 : 21,170.07 = 13,200.54 : x
  2. Step 2: Convert to fraction form
    15,329.22/21,170.07 = 13,200.54/x
  3. Step 3: Cross multiply
    15,329.22x = 21,170.07 × 13,200.54
  4. Step 4: Simplify right side
    15,329.22x = 279,456,355.84
  5. Step 5: Solve for x
    x = 279,456,355.84/15,329.22
  6. Step 6: Final answer
    x = 18,230.30

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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.