Home / 20,286.46-30,430.77-6,436.54

Finding the Fourth Proportional to 20,286.46, 30,430.77 and 6,436.54

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Solution

The fourth proportional to 20,286.46, 30,430.77 and 6,436.54 is: 9,655.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.46 : 30,430.77 = 6,436.54 : x
  2. Step 2: Convert to fraction form
    20,286.46/30,430.77 = 6,436.54/x
  3. Step 3: Cross multiply
    20,286.46x = 30,430.77 × 6,436.54
  4. Step 4: Simplify right side
    20,286.46x = 195,868,868.34
  5. Step 5: Solve for x
    x = 195,868,868.34/20,286.46
  6. Step 6: Final answer
    x = 9,655.15

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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.