Home / 21,987.28-33,025.20-13,119.94

Finding the Fourth Proportional to 21,987.28, 33,025.20 and 13,119.94

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Solution

The fourth proportional to 21,987.28, 33,025.20 and 13,119.94 is: 19,706.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.28 : 33,025.20 = 13,119.94 : x
  2. Step 2: Convert to fraction form
    21,987.28/33,025.20 = 13,119.94/x
  3. Step 3: Cross multiply
    21,987.28x = 33,025.20 × 13,119.94
  4. Step 4: Simplify right side
    21,987.28x = 433,288,708.37
  5. Step 5: Solve for x
    x = 433,288,708.37/21,987.28
  6. Step 6: Final answer
    x = 19,706.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.