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Finding the Fourth Proportional to 11,500.51, 15,866.20 and 6,463.58

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Solution

The fourth proportional to 11,500.51, 15,866.20 and 6,463.58 is: 8,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,500.51 : 15,866.20 = 6,463.58 : x
  2. Step 2: Convert to fraction form
    11,500.51/15,866.20 = 6,463.58/x
  3. Step 3: Cross multiply
    11,500.51x = 15,866.20 × 6,463.58
  4. Step 4: Simplify right side
    11,500.51x = 102,552,341.35
  5. Step 5: Solve for x
    x = 102,552,341.35/11,500.51
  6. Step 6: Final answer
    x = 8,917.20

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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.