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Finding the Fourth Proportional to 11,810.91, 17,672.01 and 7,230.35

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Solution

The fourth proportional to 11,810.91, 17,672.01 and 7,230.35 is: 10,818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,810.91 : 17,672.01 = 7,230.35 : x
  2. Step 2: Convert to fraction form
    11,810.91/17,672.01 = 7,230.35/x
  3. Step 3: Cross multiply
    11,810.91x = 17,672.01 × 7,230.35
  4. Step 4: Simplify right side
    11,810.91x = 127,774,781.35
  5. Step 5: Solve for x
    x = 127,774,781.35/11,810.91
  6. Step 6: Final answer
    x = 10,818.37

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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.