Home / 21,958.59-33,110.13-20,121.51

Finding the Fourth Proportional to 21,958.59, 33,110.13 and 20,121.51

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Solution

The fourth proportional to 21,958.59, 33,110.13 and 20,121.51 is: 30,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.59 : 33,110.13 = 20,121.51 : x
  2. Step 2: Convert to fraction form
    21,958.59/33,110.13 = 20,121.51/x
  3. Step 3: Cross multiply
    21,958.59x = 33,110.13 × 20,121.51
  4. Step 4: Simplify right side
    21,958.59x = 666,225,811.90
  5. Step 5: Solve for x
    x = 666,225,811.90/21,958.59
  6. Step 6: Final answer
    x = 30,340.10

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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.