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Finding the Fourth Proportional to 22,372.74, 30,873.71 and 12,812.31

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Solution

The fourth proportional to 22,372.74, 30,873.71 and 12,812.31 is: 17,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,372.74 : 30,873.71 = 12,812.31 : x
  2. Step 2: Convert to fraction form
    22,372.74/30,873.71 = 12,812.31/x
  3. Step 3: Cross multiply
    22,372.74x = 30,873.71 × 12,812.31
  4. Step 4: Simplify right side
    22,372.74x = 395,563,575.40
  5. Step 5: Solve for x
    x = 395,563,575.40/22,372.74
  6. Step 6: Final answer
    x = 17,680.60

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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.