Home / 10,821.51-16,229.61-4,156.65

Finding the Fourth Proportional to 10,821.51, 16,229.61 and 4,156.65

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Solution

The fourth proportional to 10,821.51, 16,229.61 and 4,156.65 is: 6,233.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.51 : 16,229.61 = 4,156.65 : x
  2. Step 2: Convert to fraction form
    10,821.51/16,229.61 = 4,156.65/x
  3. Step 3: Cross multiply
    10,821.51x = 16,229.61 × 4,156.65
  4. Step 4: Simplify right side
    10,821.51x = 67,460,808.41
  5. Step 5: Solve for x
    x = 67,460,808.41/10,821.51
  6. Step 6: Final answer
    x = 6,233.96

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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.