Home / 20,115.39-30,173.90-9,579.99

Finding the Fourth Proportional to 20,115.39, 30,173.90 and 9,579.99

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Solution

The fourth proportional to 20,115.39, 30,173.90 and 9,579.99 is: 14,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.39 : 30,173.90 = 9,579.99 : x
  2. Step 2: Convert to fraction form
    20,115.39/30,173.90 = 9,579.99/x
  3. Step 3: Cross multiply
    20,115.39x = 30,173.90 × 9,579.99
  4. Step 4: Simplify right side
    20,115.39x = 289,065,612.36
  5. Step 5: Solve for x
    x = 289,065,612.36/20,115.39
  6. Step 6: Final answer
    x = 14,370.37

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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.