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Finding the Fourth Proportional to 22,405.87, 30,918.98 and 12,334.05

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Solution

The fourth proportional to 22,405.87, 30,918.98 and 12,334.05 is: 17,020.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,405.87 : 30,918.98 = 12,334.05 : x
  2. Step 2: Convert to fraction form
    22,405.87/30,918.98 = 12,334.05/x
  3. Step 3: Cross multiply
    22,405.87x = 30,918.98 × 12,334.05
  4. Step 4: Simplify right side
    22,405.87x = 381,356,137.11
  5. Step 5: Solve for x
    x = 381,356,137.11/22,405.87
  6. Step 6: Final answer
    x = 17,020.37

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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.