Home / 20,899.25-28,840.96-11,946.94

Finding the Fourth Proportional to 20,899.25, 28,840.96 and 11,946.94

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Solution

The fourth proportional to 20,899.25, 28,840.96 and 11,946.94 is: 16,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.25 : 28,840.96 = 11,946.94 : x
  2. Step 2: Convert to fraction form
    20,899.25/28,840.96 = 11,946.94/x
  3. Step 3: Cross multiply
    20,899.25x = 28,840.96 × 11,946.94
  4. Step 4: Simplify right side
    20,899.25x = 344,561,158.93
  5. Step 5: Solve for x
    x = 344,561,158.93/20,899.25
  6. Step 6: Final answer
    x = 16,486.78

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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.