Home / 10,863.30-16,300.35-4,289.70

Finding the Fourth Proportional to 10,863.30, 16,300.35 and 4,289.70

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Solution

The fourth proportional to 10,863.30, 16,300.35 and 4,289.70 is: 6,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.30 : 16,300.35 = 4,289.70 : x
  2. Step 2: Convert to fraction form
    10,863.30/16,300.35 = 4,289.70/x
  3. Step 3: Cross multiply
    10,863.30x = 16,300.35 × 4,289.70
  4. Step 4: Simplify right side
    10,863.30x = 69,923,611.40
  5. Step 5: Solve for x
    x = 69,923,611.40/10,863.30
  6. Step 6: Final answer
    x = 6,436.68

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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.