Home / 20,900.25-28,842.33-11,947.94

Finding the Fourth Proportional to 20,900.25, 28,842.33 and 11,947.94

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Solution

The fourth proportional to 20,900.25, 28,842.33 and 11,947.94 is: 16,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.25 : 28,842.33 = 11,947.94 : x
  2. Step 2: Convert to fraction form
    20,900.25/28,842.33 = 11,947.94/x
  3. Step 3: Cross multiply
    20,900.25x = 28,842.33 × 11,947.94
  4. Step 4: Simplify right side
    20,900.25x = 344,606,428.30
  5. Step 5: Solve for x
    x = 344,606,428.30/20,900.25
  6. Step 6: Final answer
    x = 16,488.15

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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.