Home / 22,542.60-31,019.10-21,857.79

Finding the Fourth Proportional to 22,542.60, 31,019.10 and 21,857.79

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Solution

The fourth proportional to 22,542.60, 31,019.10 and 21,857.79 is: 30,076.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,542.60 : 31,019.10 = 21,857.79 : x
  2. Step 2: Convert to fraction form
    22,542.60/31,019.10 = 21,857.79/x
  3. Step 3: Cross multiply
    22,542.60x = 31,019.10 × 21,857.79
  4. Step 4: Simplify right side
    22,542.60x = 678,008,973.79
  5. Step 5: Solve for x
    x = 678,008,973.79/22,542.60
  6. Step 6: Final answer
    x = 30,076.79

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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.