Home / 20,901.83-28,846.55-11,947.64

Finding the Fourth Proportional to 20,901.83, 28,846.55 and 11,947.64

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Solution

The fourth proportional to 20,901.83, 28,846.55 and 11,947.64 is: 16,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.83 : 28,846.55 = 11,947.64 : x
  2. Step 2: Convert to fraction form
    20,901.83/28,846.55 = 11,947.64/x
  3. Step 3: Cross multiply
    20,901.83x = 28,846.55 × 11,947.64
  4. Step 4: Simplify right side
    20,901.83x = 344,647,990.67
  5. Step 5: Solve for x
    x = 344,647,990.67/20,901.83
  6. Step 6: Final answer
    x = 16,488.89

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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.