Home / 20,954.26-28,917.65-11,523.70

Finding the Fourth Proportional to 20,954.26, 28,917.65 and 11,523.70

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Solution

The fourth proportional to 20,954.26, 28,917.65 and 11,523.70 is: 15,903.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.26 : 28,917.65 = 11,523.70 : x
  2. Step 2: Convert to fraction form
    20,954.26/28,917.65 = 11,523.70/x
  3. Step 3: Cross multiply
    20,954.26x = 28,917.65 × 11,523.70
  4. Step 4: Simplify right side
    20,954.26x = 333,238,323.31
  5. Step 5: Solve for x
    x = 333,238,323.31/20,954.26
  6. Step 6: Final answer
    x = 15,903.13

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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.