Home / 17,220.87-23,765.40-11,172.60

Finding the Fourth Proportional to 17,220.87, 23,765.40 and 11,172.60

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Solution

The fourth proportional to 17,220.87, 23,765.40 and 11,172.60 is: 15,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.87 : 23,765.40 = 11,172.60 : x
  2. Step 2: Convert to fraction form
    17,220.87/23,765.40 = 11,172.60/x
  3. Step 3: Cross multiply
    17,220.87x = 23,765.40 × 11,172.60
  4. Step 4: Simplify right side
    17,220.87x = 265,521,308.04
  5. Step 5: Solve for x
    x = 265,521,308.04/17,220.87
  6. Step 6: Final answer
    x = 15,418.58

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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.