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Finding the Fourth Proportional to 20,165.70, 30,259.35 and 9,074.10

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Solution

The fourth proportional to 20,165.70, 30,259.35 and 9,074.10 is: 13,616.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.70 : 30,259.35 = 9,074.10 : x
  2. Step 2: Convert to fraction form
    20,165.70/30,259.35 = 9,074.10/x
  3. Step 3: Cross multiply
    20,165.70x = 30,259.35 × 9,074.10
  4. Step 4: Simplify right side
    20,165.70x = 274,576,367.84
  5. Step 5: Solve for x
    x = 274,576,367.84/20,165.70
  6. Step 6: Final answer
    x = 13,616.01

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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.