Home / 10,905.20-16,353.66-4,661.30

Finding the Fourth Proportional to 10,905.20, 16,353.66 and 4,661.30

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Solution

The fourth proportional to 10,905.20, 16,353.66 and 4,661.30 is: 6,990.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.20 : 16,353.66 = 4,661.30 : x
  2. Step 2: Convert to fraction form
    10,905.20/16,353.66 = 4,661.30/x
  3. Step 3: Cross multiply
    10,905.20x = 16,353.66 × 4,661.30
  4. Step 4: Simplify right side
    10,905.20x = 76,229,315.36
  5. Step 5: Solve for x
    x = 76,229,315.36/10,905.20
  6. Step 6: Final answer
    x = 6,990.18

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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.