Home / 20,901.07-28,843.35-11,340.75

Finding the Fourth Proportional to 20,901.07, 28,843.35 and 11,340.75

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Solution

The fourth proportional to 20,901.07, 28,843.35 and 11,340.75 is: 15,650.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.07 : 28,843.35 = 11,340.75 : x
  2. Step 2: Convert to fraction form
    20,901.07/28,843.35 = 11,340.75/x
  3. Step 3: Cross multiply
    20,901.07x = 28,843.35 × 11,340.75
  4. Step 4: Simplify right side
    20,901.07x = 327,105,221.51
  5. Step 5: Solve for x
    x = 327,105,221.51/20,901.07
  6. Step 6: Final answer
    x = 15,650.17

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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.