Home / 20,943.38-28,901.38-11,383.04

Finding the Fourth Proportional to 20,943.38, 28,901.38 and 11,383.04

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Solution

The fourth proportional to 20,943.38, 28,901.38 and 11,383.04 is: 15,708.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.38 : 28,901.38 = 11,383.04 : x
  2. Step 2: Convert to fraction form
    20,943.38/28,901.38 = 11,383.04/x
  3. Step 3: Cross multiply
    20,943.38x = 28,901.38 × 11,383.04
  4. Step 4: Simplify right side
    20,943.38x = 328,985,564.60
  5. Step 5: Solve for x
    x = 328,985,564.60/20,943.38
  6. Step 6: Final answer
    x = 15,708.33

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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.