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Finding the Fourth Proportional to 16,288.20, 22,410.90 and 15,251.40

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Solution

The fourth proportional to 16,288.20, 22,410.90 and 15,251.40 is: 20,984.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,288.20 : 22,410.90 = 15,251.40 : x
  2. Step 2: Convert to fraction form
    16,288.20/22,410.90 = 15,251.40/x
  3. Step 3: Cross multiply
    16,288.20x = 22,410.90 × 15,251.40
  4. Step 4: Simplify right side
    16,288.20x = 341,797,600.26
  5. Step 5: Solve for x
    x = 341,797,600.26/16,288.20
  6. Step 6: Final answer
    x = 20,984.37

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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.