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Finding the Fourth Proportional to 11,405.58, 15,736.01 and 6,369

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Solution

The fourth proportional to 11,405.58, 15,736.01 and 6,369 is: 8,787.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.58 : 15,736.01 = 6,369 : x
  2. Step 2: Convert to fraction form
    11,405.58/15,736.01 = 6,369/x
  3. Step 3: Cross multiply
    11,405.58x = 15,736.01 × 6,369
  4. Step 4: Simplify right side
    11,405.58x = 100,222,615.85
  5. Step 5: Solve for x
    x = 100,222,615.85/11,405.58
  6. Step 6: Final answer
    x = 8,787.16

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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.