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Finding the Fourth Proportional to 22,551.84, 31,121.46 and 12,615.84

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Solution

The fourth proportional to 22,551.84, 31,121.46 and 12,615.84 is: 17,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.84 : 31,121.46 = 12,615.84 : x
  2. Step 2: Convert to fraction form
    22,551.84/31,121.46 = 12,615.84/x
  3. Step 3: Cross multiply
    22,551.84x = 31,121.46 × 12,615.84
  4. Step 4: Simplify right side
    22,551.84x = 392,623,359.93
  5. Step 5: Solve for x
    x = 392,623,359.93/22,551.84
  6. Step 6: Final answer
    x = 17,409.81

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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.