Home / 22,202.90-30,639.12-12,644.09

Finding the Fourth Proportional to 22,202.90, 30,639.12 and 12,644.09

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Solution

The fourth proportional to 22,202.90, 30,639.12 and 12,644.09 is: 17,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,202.90 : 30,639.12 = 12,644.09 : x
  2. Step 2: Convert to fraction form
    22,202.90/30,639.12 = 12,644.09/x
  3. Step 3: Cross multiply
    22,202.90x = 30,639.12 × 12,644.09
  4. Step 4: Simplify right side
    22,202.90x = 387,403,790.80
  5. Step 5: Solve for x
    x = 387,403,790.80/22,202.90
  6. Step 6: Final answer
    x = 17,448.34

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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.