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Finding the Fourth Proportional to 11,356.86, 17,034.58 and 4,239.71

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Solution

The fourth proportional to 11,356.86, 17,034.58 and 4,239.71 is: 6,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.86 : 17,034.58 = 4,239.71 : x
  2. Step 2: Convert to fraction form
    11,356.86/17,034.58 = 4,239.71/x
  3. Step 3: Cross multiply
    11,356.86x = 17,034.58 × 4,239.71
  4. Step 4: Simplify right side
    11,356.86x = 72,221,714.02
  5. Step 5: Solve for x
    x = 72,221,714.02/11,356.86
  6. Step 6: Final answer
    x = 6,359.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.