Home / 20,920.02-28,868.58-11,843.97

Finding the Fourth Proportional to 20,920.02, 28,868.58 and 11,843.97

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Solution

The fourth proportional to 20,920.02, 28,868.58 and 11,843.97 is: 16,344.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920.02 : 28,868.58 = 11,843.97 : x
  2. Step 2: Convert to fraction form
    20,920.02/28,868.58 = 11,843.97/x
  3. Step 3: Cross multiply
    20,920.02x = 28,868.58 × 11,843.97
  4. Step 4: Simplify right side
    20,920.02x = 341,918,451.12
  5. Step 5: Solve for x
    x = 341,918,451.12/20,920.02
  6. Step 6: Final answer
    x = 16,344.08

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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.