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Finding the Fourth Proportional to 11,166.81, 16,750.21 and 8,703.47

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Solution

The fourth proportional to 11,166.81, 16,750.21 and 8,703.47 is: 13,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,166.81 : 16,750.21 = 8,703.47 : x
  2. Step 2: Convert to fraction form
    11,166.81/16,750.21 = 8,703.47/x
  3. Step 3: Cross multiply
    11,166.81x = 16,750.21 × 8,703.47
  4. Step 4: Simplify right side
    11,166.81x = 145,784,950.23
  5. Step 5: Solve for x
    x = 145,784,950.23/11,166.81
  6. Step 6: Final answer
    x = 13,055.20

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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.