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Finding the Fourth Proportional to 8,672.40, 13,005.30 and 6,845.04

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Solution

The fourth proportional to 8,672.40, 13,005.30 and 6,845.04 is: 10,264.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.40 : 13,005.30 = 6,845.04 : x
  2. Step 2: Convert to fraction form
    8,672.40/13,005.30 = 6,845.04/x
  3. Step 3: Cross multiply
    8,672.40x = 13,005.30 × 6,845.04
  4. Step 4: Simplify right side
    8,672.40x = 89,021,798.71
  5. Step 5: Solve for x
    x = 89,021,798.71/8,672.40
  6. Step 6: Final answer
    x = 10,264.96

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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.