Home / 20,299.30-30,434.55-9,211.30

Finding the Fourth Proportional to 20,299.30, 30,434.55 and 9,211.30

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Solution

The fourth proportional to 20,299.30, 30,434.55 and 9,211.30 is: 13,810.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.30 : 30,434.55 = 9,211.30 : x
  2. Step 2: Convert to fraction form
    20,299.30/30,434.55 = 9,211.30/x
  3. Step 3: Cross multiply
    20,299.30x = 30,434.55 × 9,211.30
  4. Step 4: Simplify right side
    20,299.30x = 280,341,770.42
  5. Step 5: Solve for x
    x = 280,341,770.42/20,299.30
  6. Step 6: Final answer
    x = 13,810.42

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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.