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Finding the Fourth Proportional to 22,366.50, 30,865.77 and 12,940.53

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Solution

The fourth proportional to 22,366.50, 30,865.77 and 12,940.53 is: 17,857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,366.50 : 30,865.77 = 12,940.53 : x
  2. Step 2: Convert to fraction form
    22,366.50/30,865.77 = 12,940.53/x
  3. Step 3: Cross multiply
    22,366.50x = 30,865.77 × 12,940.53
  4. Step 4: Simplify right side
    22,366.50x = 399,419,422.66
  5. Step 5: Solve for x
    x = 399,419,422.66/22,366.50
  6. Step 6: Final answer
    x = 17,857.93

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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.