Home / 22,420.42-30,716.11-21,579.64

Finding the Fourth Proportional to 22,420.42, 30,716.11 and 21,579.64

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Solution

The fourth proportional to 22,420.42, 30,716.11 and 21,579.64 is: 29,564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.42 : 30,716.11 = 21,579.64 : x
  2. Step 2: Convert to fraction form
    22,420.42/30,716.11 = 21,579.64/x
  3. Step 3: Cross multiply
    22,420.42x = 30,716.11 × 21,579.64
  4. Step 4: Simplify right side
    22,420.42x = 662,842,424.80
  5. Step 5: Solve for x
    x = 662,842,424.80/22,420.42
  6. Step 6: Final answer
    x = 29,564.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.