Home / 20,206.53-27,888.30-12,249.90

Finding the Fourth Proportional to 20,206.53, 27,888.30 and 12,249.90

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Solution

The fourth proportional to 20,206.53, 27,888.30 and 12,249.90 is: 16,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.53 : 27,888.30 = 12,249.90 : x
  2. Step 2: Convert to fraction form
    20,206.53/27,888.30 = 12,249.90/x
  3. Step 3: Cross multiply
    20,206.53x = 27,888.30 × 12,249.90
  4. Step 4: Simplify right side
    20,206.53x = 341,628,886.17
  5. Step 5: Solve for x
    x = 341,628,886.17/20,206.53
  6. Step 6: Final answer
    x = 16,906.86

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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.