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Finding the Fourth Proportional to 10,806.62, 16,209.93 and 8,345.03

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Solution

The fourth proportional to 10,806.62, 16,209.93 and 8,345.03 is: 12,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,806.62 : 16,209.93 = 8,345.03 : x
  2. Step 2: Convert to fraction form
    10,806.62/16,209.93 = 8,345.03/x
  3. Step 3: Cross multiply
    10,806.62x = 16,209.93 × 8,345.03
  4. Step 4: Simplify right side
    10,806.62x = 135,272,423.97
  5. Step 5: Solve for x
    x = 135,272,423.97/10,806.62
  6. Step 6: Final answer
    x = 12,517.55

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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.