Home / 11,651.18-16,078.68-7,173.81

Finding the Fourth Proportional to 11,651.18, 16,078.68 and 7,173.81

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Solution

The fourth proportional to 11,651.18, 16,078.68 and 7,173.81 is: 9,899.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,651.18 : 16,078.68 = 7,173.81 : x
  2. Step 2: Convert to fraction form
    11,651.18/16,078.68 = 7,173.81/x
  3. Step 3: Cross multiply
    11,651.18x = 16,078.68 × 7,173.81
  4. Step 4: Simplify right side
    11,651.18x = 115,345,395.37
  5. Step 5: Solve for x
    x = 115,345,395.37/11,651.18
  6. Step 6: Final answer
    x = 9,899.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.