Home / 22,821.21-31,515.01-21,578.81

Finding the Fourth Proportional to 22,821.21, 31,515.01 and 21,578.81

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Solution

The fourth proportional to 22,821.21, 31,515.01 and 21,578.81 is: 29,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,821.21 : 31,515.01 = 21,578.81 : x
  2. Step 2: Convert to fraction form
    22,821.21/31,515.01 = 21,578.81/x
  3. Step 3: Cross multiply
    22,821.21x = 31,515.01 × 21,578.81
  4. Step 4: Simplify right side
    22,821.21x = 680,056,201.42
  5. Step 5: Solve for x
    x = 680,056,201.42/22,821.21
  6. Step 6: Final answer
    x = 29,799.31

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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.