Home / 20,273.40-27,961.22-12,315.46

Finding the Fourth Proportional to 20,273.40, 27,961.22 and 12,315.46

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Solution

The fourth proportional to 20,273.40, 27,961.22 and 12,315.46 is: 16,985.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.40 : 27,961.22 = 12,315.46 : x
  2. Step 2: Convert to fraction form
    20,273.40/27,961.22 = 12,315.46/x
  3. Step 3: Cross multiply
    20,273.40x = 27,961.22 × 12,315.46
  4. Step 4: Simplify right side
    20,273.40x = 344,355,286.46
  5. Step 5: Solve for x
    x = 344,355,286.46/20,273.40
  6. Step 6: Final answer
    x = 16,985.57

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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.