Home / 20,901.43-28,844.81-11,470.33

Finding the Fourth Proportional to 20,901.43, 28,844.81 and 11,470.33

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Solution

The fourth proportional to 20,901.43, 28,844.81 and 11,470.33 is: 15,829.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.43 : 28,844.81 = 11,470.33 : x
  2. Step 2: Convert to fraction form
    20,901.43/28,844.81 = 11,470.33/x
  3. Step 3: Cross multiply
    20,901.43x = 28,844.81 × 11,470.33
  4. Step 4: Simplify right side
    20,901.43x = 330,859,489.49
  5. Step 5: Solve for x
    x = 330,859,489.49/20,901.43
  6. Step 6: Final answer
    x = 15,829.51

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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.