Home / 20,899.94-28,841.90-11,947.64

Finding the Fourth Proportional to 20,899.94, 28,841.90 and 11,947.64

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Solution

The fourth proportional to 20,899.94, 28,841.90 and 11,947.64 is: 16,487.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.94 : 28,841.90 = 11,947.64 : x
  2. Step 2: Convert to fraction form
    20,899.94/28,841.90 = 11,947.64/x
  3. Step 3: Cross multiply
    20,899.94x = 28,841.90 × 11,947.64
  4. Step 4: Simplify right side
    20,899.94x = 344,592,434.17
  5. Step 5: Solve for x
    x = 344,592,434.17/20,899.94
  6. Step 6: Final answer
    x = 16,487.73

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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.