Home / 22,515.91-33,773.81-21,145.78

Finding the Fourth Proportional to 22,515.91, 33,773.81 and 21,145.78

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Solution

The fourth proportional to 22,515.91, 33,773.81 and 21,145.78 is: 31,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.91 : 33,773.81 = 21,145.78 : x
  2. Step 2: Convert to fraction form
    22,515.91/33,773.81 = 21,145.78/x
  3. Step 3: Cross multiply
    22,515.91x = 33,773.81 × 21,145.78
  4. Step 4: Simplify right side
    22,515.91x = 714,173,450.29
  5. Step 5: Solve for x
    x = 714,173,450.29/22,515.91
  6. Step 6: Final answer
    x = 31,718.62

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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.