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Finding the Fourth Proportional to 11,375.15, 15,698.99 and 6,339.83

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Solution

The fourth proportional to 11,375.15, 15,698.99 and 6,339.83 is: 8,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.15 : 15,698.99 = 6,339.83 : x
  2. Step 2: Convert to fraction form
    11,375.15/15,698.99 = 6,339.83/x
  3. Step 3: Cross multiply
    11,375.15x = 15,698.99 × 6,339.83
  4. Step 4: Simplify right side
    11,375.15x = 99,528,935.32
  5. Step 5: Solve for x
    x = 99,528,935.32/11,375.15
  6. Step 6: Final answer
    x = 8,749.68

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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.