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Finding the Fourth Proportional to 8,749, 13,123.50 and 8,528.68

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Solution

The fourth proportional to 8,749, 13,123.50 and 8,528.68 is: 12,793.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749 : 13,123.50 = 8,528.68 : x
  2. Step 2: Convert to fraction form
    8,749/13,123.50 = 8,528.68/x
  3. Step 3: Cross multiply
    8,749x = 13,123.50 × 8,528.68
  4. Step 4: Simplify right side
    8,749x = 111,926,131.98
  5. Step 5: Solve for x
    x = 111,926,131.98/8,749
  6. Step 6: Final answer
    x = 12,793.02

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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.