Home / 15,208.06-20,997-13,611.94

Finding the Fourth Proportional to 15,208.06, 20,997 and 13,611.94

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Solution

The fourth proportional to 15,208.06, 20,997 and 13,611.94 is: 18,793.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.06 : 20,997 = 13,611.94 : x
  2. Step 2: Convert to fraction form
    15,208.06/20,997 = 13,611.94/x
  3. Step 3: Cross multiply
    15,208.06x = 20,997 × 13,611.94
  4. Step 4: Simplify right side
    15,208.06x = 285,809,904.18
  5. Step 5: Solve for x
    x = 285,809,904.18/15,208.06
  6. Step 6: Final answer
    x = 18,793.32

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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.