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Finding the Fourth Proportional to 11,375.70, 15,698.06 and 6,339.66

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Solution

The fourth proportional to 11,375.70, 15,698.06 and 6,339.66 is: 8,748.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.70 : 15,698.06 = 6,339.66 : x
  2. Step 2: Convert to fraction form
    11,375.70/15,698.06 = 6,339.66/x
  3. Step 3: Cross multiply
    11,375.70x = 15,698.06 × 6,339.66
  4. Step 4: Simplify right side
    11,375.70x = 99,520,363.06
  5. Step 5: Solve for x
    x = 99,520,363.06/11,375.70
  6. Step 6: Final answer
    x = 8,748.50

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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.