Home / 20,196.20-30,294.30-9,115.40

Finding the Fourth Proportional to 20,196.20, 30,294.30 and 9,115.40

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Solution

The fourth proportional to 20,196.20, 30,294.30 and 9,115.40 is: 13,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.20 : 30,294.30 = 9,115.40 : x
  2. Step 2: Convert to fraction form
    20,196.20/30,294.30 = 9,115.40/x
  3. Step 3: Cross multiply
    20,196.20x = 30,294.30 × 9,115.40
  4. Step 4: Simplify right side
    20,196.20x = 276,144,662.22
  5. Step 5: Solve for x
    x = 276,144,662.22/20,196.20
  6. Step 6: Final answer
    x = 13,673.10

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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.