Home / 20,947.74-28,910.40-11,998.14

Finding the Fourth Proportional to 20,947.74, 28,910.40 and 11,998.14

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Solution

The fourth proportional to 20,947.74, 28,910.40 and 11,998.14 is: 16,558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.74 : 28,910.40 = 11,998.14 : x
  2. Step 2: Convert to fraction form
    20,947.74/28,910.40 = 11,998.14/x
  3. Step 3: Cross multiply
    20,947.74x = 28,910.40 × 11,998.14
  4. Step 4: Simplify right side
    20,947.74x = 346,871,026.66
  5. Step 5: Solve for x
    x = 346,871,026.66/20,947.74
  6. Step 6: Final answer
    x = 16,558.88

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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.