Home / 11,275.12-16,931.91-9,399.09

Finding the Fourth Proportional to 11,275.12, 16,931.91 and 9,399.09

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Solution

The fourth proportional to 11,275.12, 16,931.91 and 9,399.09 is: 14,114.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,275.12 : 16,931.91 = 9,399.09 : x
  2. Step 2: Convert to fraction form
    11,275.12/16,931.91 = 9,399.09/x
  3. Step 3: Cross multiply
    11,275.12x = 16,931.91 × 9,399.09
  4. Step 4: Simplify right side
    11,275.12x = 159,144,523.03
  5. Step 5: Solve for x
    x = 159,144,523.03/11,275.12
  6. Step 6: Final answer
    x = 14,114.66

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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.