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Finding the Fourth Proportional to 22,242.68, 30,690.24 and 12,809.44

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Solution

The fourth proportional to 22,242.68, 30,690.24 and 12,809.44 is: 17,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,242.68 : 30,690.24 = 12,809.44 : x
  2. Step 2: Convert to fraction form
    22,242.68/30,690.24 = 12,809.44/x
  3. Step 3: Cross multiply
    22,242.68x = 30,690.24 × 12,809.44
  4. Step 4: Simplify right side
    22,242.68x = 393,124,787.87
  5. Step 5: Solve for x
    x = 393,124,787.87/22,242.68
  6. Step 6: Final answer
    x = 17,674.34

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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.