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Finding the Fourth Proportional to 11,242.40, 16,863.60 and 6,868.40

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Solution

The fourth proportional to 11,242.40, 16,863.60 and 6,868.40 is: 10,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,242.40 : 16,863.60 = 6,868.40 : x
  2. Step 2: Convert to fraction form
    11,242.40/16,863.60 = 6,868.40/x
  3. Step 3: Cross multiply
    11,242.40x = 16,863.60 × 6,868.40
  4. Step 4: Simplify right side
    11,242.40x = 115,825,950.24
  5. Step 5: Solve for x
    x = 115,825,950.24/11,242.40
  6. Step 6: Final answer
    x = 10,302.60

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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.