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Finding the Fourth Proportional to 11,026.81, 15,218.31 and 6,312.61

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Solution

The fourth proportional to 11,026.81, 15,218.31 and 6,312.61 is: 8,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,026.81 : 15,218.31 = 6,312.61 : x
  2. Step 2: Convert to fraction form
    11,026.81/15,218.31 = 6,312.61/x
  3. Step 3: Cross multiply
    11,026.81x = 15,218.31 × 6,312.61
  4. Step 4: Simplify right side
    11,026.81x = 96,067,255.89
  5. Step 5: Solve for x
    x = 96,067,255.89/11,026.81
  6. Step 6: Final answer
    x = 8,712.15

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.