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Finding the Fourth Proportional to 30,158.80, 45,259.80 and 16,997.20

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Solution

The fourth proportional to 30,158.80, 45,259.80 and 16,997.20 is: 25,507.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,158.80 : 45,259.80 = 16,997.20 : x
  2. Step 2: Convert to fraction form
    30,158.80/45,259.80 = 16,997.20/x
  3. Step 3: Cross multiply
    30,158.80x = 45,259.80 × 16,997.20
  4. Step 4: Simplify right side
    30,158.80x = 769,289,872.56
  5. Step 5: Solve for x
    x = 769,289,872.56/30,158.80
  6. Step 6: Final answer
    x = 25,507.97

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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.