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Finding the Fourth Proportional to 11,375.47, 15,697.72 and 6,339.42

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Solution

The fourth proportional to 11,375.47, 15,697.72 and 6,339.42 is: 8,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.47 : 15,697.72 = 6,339.42 : x
  2. Step 2: Convert to fraction form
    11,375.47/15,697.72 = 6,339.42/x
  3. Step 3: Cross multiply
    11,375.47x = 15,697.72 × 6,339.42
  4. Step 4: Simplify right side
    11,375.47x = 99,514,424.27
  5. Step 5: Solve for x
    x = 99,514,424.27/11,375.47
  6. Step 6: Final answer
    x = 8,748.16

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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.