Home / 10,821.10-16,268.10-9,217.30

Finding the Fourth Proportional to 10,821.10, 16,268.10 and 9,217.30

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Solution

The fourth proportional to 10,821.10, 16,268.10 and 9,217.30 is: 13,857.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.10 : 16,268.10 = 9,217.30 : x
  2. Step 2: Convert to fraction form
    10,821.10/16,268.10 = 9,217.30/x
  3. Step 3: Cross multiply
    10,821.10x = 16,268.10 × 9,217.30
  4. Step 4: Simplify right side
    10,821.10x = 149,947,958.13
  5. Step 5: Solve for x
    x = 149,947,958.13/10,821.10
  6. Step 6: Final answer
    x = 13,857.00

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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.