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Finding the Fourth Proportional to 11,093.80, 15,308.79 and 6,378.10

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Solution

The fourth proportional to 11,093.80, 15,308.79 and 6,378.10 is: 8,801.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,093.80 : 15,308.79 = 6,378.10 : x
  2. Step 2: Convert to fraction form
    11,093.80/15,308.79 = 6,378.10/x
  3. Step 3: Cross multiply
    11,093.80x = 15,308.79 × 6,378.10
  4. Step 4: Simplify right side
    11,093.80x = 97,640,993.50
  5. Step 5: Solve for x
    x = 97,640,993.50/11,093.80
  6. Step 6: Final answer
    x = 8,801.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.