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Finding the Fourth Proportional to 10,679.80, 16,006.20 and 4,097.20

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Solution

The fourth proportional to 10,679.80, 16,006.20 and 4,097.20 is: 6,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,679.80 : 16,006.20 = 4,097.20 : x
  2. Step 2: Convert to fraction form
    10,679.80/16,006.20 = 4,097.20/x
  3. Step 3: Cross multiply
    10,679.80x = 16,006.20 × 4,097.20
  4. Step 4: Simplify right side
    10,679.80x = 65,580,602.64
  5. Step 5: Solve for x
    x = 65,580,602.64/10,679.80
  6. Step 6: Final answer
    x = 6,140.62

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1.5x scale

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.