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Finding the Fourth Proportional to 22,200.40, 30,624.40 and 13,704.40

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Solution

The fourth proportional to 22,200.40, 30,624.40 and 13,704.40 is: 18,904.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.40 : 30,624.40 = 13,704.40 : x
  2. Step 2: Convert to fraction form
    22,200.40/30,624.40 = 13,704.40/x
  3. Step 3: Cross multiply
    22,200.40x = 30,624.40 × 13,704.40
  4. Step 4: Simplify right side
    22,200.40x = 419,689,027.36
  5. Step 5: Solve for x
    x = 419,689,027.36/22,200.40
  6. Step 6: Final answer
    x = 18,904.57

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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.