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Finding the Fourth Proportional to 10,953.52, 15,115.86 and 5,917.74

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Solution

The fourth proportional to 10,953.52, 15,115.86 and 5,917.74 is: 8,166.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,953.52 : 15,115.86 = 5,917.74 : x
  2. Step 2: Convert to fraction form
    10,953.52/15,115.86 = 5,917.74/x
  3. Step 3: Cross multiply
    10,953.52x = 15,115.86 × 5,917.74
  4. Step 4: Simplify right side
    10,953.52x = 89,451,729.36
  5. Step 5: Solve for x
    x = 89,451,729.36/10,953.52
  6. Step 6: Final answer
    x = 8,166.48

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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.