Home / 21,947.87-30,287.97-11,876.33

Finding the Fourth Proportional to 21,947.87, 30,287.97 and 11,876.33

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Solution

The fourth proportional to 21,947.87, 30,287.97 and 11,876.33 is: 16,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.87 : 30,287.97 = 11,876.33 : x
  2. Step 2: Convert to fraction form
    21,947.87/30,287.97 = 11,876.33/x
  3. Step 3: Cross multiply
    21,947.87x = 30,287.97 × 11,876.33
  4. Step 4: Simplify right side
    21,947.87x = 359,709,775.31
  5. Step 5: Solve for x
    x = 359,709,775.31/21,947.87
  6. Step 6: Final answer
    x = 16,389.28

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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.