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Finding the Fourth Proportional to 11,379.06, 15,703.11 and 6,343.74

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Solution

The fourth proportional to 11,379.06, 15,703.11 and 6,343.74 is: 8,754.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.06 : 15,703.11 = 6,343.74 : x
  2. Step 2: Convert to fraction form
    11,379.06/15,703.11 = 6,343.74/x
  3. Step 3: Cross multiply
    11,379.06x = 15,703.11 × 6,343.74
  4. Step 4: Simplify right side
    11,379.06x = 99,616,447.03
  5. Step 5: Solve for x
    x = 99,616,447.03/11,379.06
  6. Step 6: Final answer
    x = 8,754.37

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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.