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Finding the Fourth Proportional to 22,347.90, 30,836.64 and 12,914.64

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Solution

The fourth proportional to 22,347.90, 30,836.64 and 12,914.64 is: 17,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,347.90 : 30,836.64 = 12,914.64 : x
  2. Step 2: Convert to fraction form
    22,347.90/30,836.64 = 12,914.64/x
  3. Step 3: Cross multiply
    22,347.90x = 30,836.64 × 12,914.64
  4. Step 4: Simplify right side
    22,347.90x = 398,244,104.41
  5. Step 5: Solve for x
    x = 398,244,104.41/22,347.90
  6. Step 6: Final answer
    x = 17,820.20

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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.