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Finding the Fourth Proportional to 11,762.53, 17,631.49 and 8,637.89

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Solution

The fourth proportional to 11,762.53, 17,631.49 and 8,637.89 is: 12,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,762.53 : 17,631.49 = 8,637.89 : x
  2. Step 2: Convert to fraction form
    11,762.53/17,631.49 = 8,637.89/x
  3. Step 3: Cross multiply
    11,762.53x = 17,631.49 × 8,637.89
  4. Step 4: Simplify right side
    11,762.53x = 152,298,871.16
  5. Step 5: Solve for x
    x = 152,298,871.16/11,762.53
  6. Step 6: Final answer
    x = 12,947.80

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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.