Home / 20,288.21-30,432.32-6,436.13

Finding the Fourth Proportional to 20,288.21, 30,432.32 and 6,436.13

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Solution

The fourth proportional to 20,288.21, 30,432.32 and 6,436.13 is: 9,654.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.21 : 30,432.32 = 6,436.13 : x
  2. Step 2: Convert to fraction form
    20,288.21/30,432.32 = 6,436.13/x
  3. Step 3: Cross multiply
    20,288.21x = 30,432.32 × 6,436.13
  4. Step 4: Simplify right side
    20,288.21x = 195,866,183.38
  5. Step 5: Solve for x
    x = 195,866,183.38/20,288.21
  6. Step 6: Final answer
    x = 9,654.19

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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.