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Finding the Fourth Proportional to 10,808.74, 16,210.20 and 4,143.79

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Solution

The fourth proportional to 10,808.74, 16,210.20 and 4,143.79 is: 6,214.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.74 : 16,210.20 = 4,143.79 : x
  2. Step 2: Convert to fraction form
    10,808.74/16,210.20 = 4,143.79/x
  3. Step 3: Cross multiply
    10,808.74x = 16,210.20 × 4,143.79
  4. Step 4: Simplify right side
    10,808.74x = 67,171,583.61
  5. Step 5: Solve for x
    x = 67,171,583.61/10,808.74
  6. Step 6: Final answer
    x = 6,214.56

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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.