Home / 15,187.80-20,928.06-11,202.60

Finding the Fourth Proportional to 15,187.80, 20,928.06 and 11,202.60

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Solution

The fourth proportional to 15,187.80, 20,928.06 and 11,202.60 is: 15,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.80 : 20,928.06 = 11,202.60 : x
  2. Step 2: Convert to fraction form
    15,187.80/20,928.06 = 11,202.60/x
  3. Step 3: Cross multiply
    15,187.80x = 20,928.06 × 11,202.60
  4. Step 4: Simplify right side
    15,187.80x = 234,448,684.96
  5. Step 5: Solve for x
    x = 234,448,684.96/15,187.80
  6. Step 6: Final answer
    x = 15,436.65

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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.