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Finding the Fourth Proportional to 22,178.61, 30,361.50 and 22,020.39

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Solution

The fourth proportional to 22,178.61, 30,361.50 and 22,020.39 is: 30,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,178.61 : 30,361.50 = 22,020.39 : x
  2. Step 2: Convert to fraction form
    22,178.61/30,361.50 = 22,020.39/x
  3. Step 3: Cross multiply
    22,178.61x = 30,361.50 × 22,020.39
  4. Step 4: Simplify right side
    22,178.61x = 668,572,070.99
  5. Step 5: Solve for x
    x = 668,572,070.99/22,178.61
  6. Step 6: Final answer
    x = 30,144.90

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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.