Home / 21,959.09-33,110.88-20,122.01

Finding the Fourth Proportional to 21,959.09, 33,110.88 and 20,122.01

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Solution

The fourth proportional to 21,959.09, 33,110.88 and 20,122.01 is: 30,340.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.09 : 33,110.88 = 20,122.01 : x
  2. Step 2: Convert to fraction form
    21,959.09/33,110.88 = 20,122.01/x
  3. Step 3: Cross multiply
    21,959.09x = 33,110.88 × 20,122.01
  4. Step 4: Simplify right side
    21,959.09x = 666,257,458.47
  5. Step 5: Solve for x
    x = 666,257,458.47/21,959.09
  6. Step 6: Final answer
    x = 30,340.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.