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Finding the Fourth Proportional to 8,725.80, 13,070.52 and 6,868.02

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Solution

The fourth proportional to 8,725.80, 13,070.52 and 6,868.02 is: 10,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.80 : 13,070.52 = 6,868.02 : x
  2. Step 2: Convert to fraction form
    8,725.80/13,070.52 = 6,868.02/x
  3. Step 3: Cross multiply
    8,725.80x = 13,070.52 × 6,868.02
  4. Step 4: Simplify right side
    8,725.80x = 89,768,592.77
  5. Step 5: Solve for x
    x = 89,768,592.77/8,725.80
  6. Step 6: Final answer
    x = 10,287.72

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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.