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Finding the Fourth Proportional to 18,735.52, 28,125.60 and 14,843.20

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Solution

The fourth proportional to 18,735.52, 28,125.60 and 14,843.20 is: 22,282.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.52 : 28,125.60 = 14,843.20 : x
  2. Step 2: Convert to fraction form
    18,735.52/28,125.60 = 14,843.20/x
  3. Step 3: Cross multiply
    18,735.52x = 28,125.60 × 14,843.20
  4. Step 4: Simplify right side
    18,735.52x = 417,473,905.92
  5. Step 5: Solve for x
    x = 417,473,905.92/18,735.52
  6. Step 6: Final answer
    x = 22,282.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.