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Finding the Fourth Proportional to 22,222, 30,634.68 and 15,139.36

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Solution

The fourth proportional to 22,222, 30,634.68 and 15,139.36 is: 20,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,222 : 30,634.68 = 15,139.36 : x
  2. Step 2: Convert to fraction form
    22,222/30,634.68 = 15,139.36/x
  3. Step 3: Cross multiply
    22,222x = 30,634.68 × 15,139.36
  4. Step 4: Simplify right side
    22,222x = 463,789,449.00
  5. Step 5: Solve for x
    x = 463,789,449.00/22,222
  6. Step 6: Final answer
    x = 20,870.73

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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.