Home / 11,949.81-16,488.11-7,167.57

Finding the Fourth Proportional to 11,949.81, 16,488.11 and 7,167.57

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Solution

The fourth proportional to 11,949.81, 16,488.11 and 7,167.57 is: 9,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.81 : 16,488.11 = 7,167.57 : x
  2. Step 2: Convert to fraction form
    11,949.81/16,488.11 = 7,167.57/x
  3. Step 3: Cross multiply
    11,949.81x = 16,488.11 × 7,167.57
  4. Step 4: Simplify right side
    11,949.81x = 118,179,646.75
  5. Step 5: Solve for x
    x = 118,179,646.75/11,949.81
  6. Step 6: Final answer
    x = 9,889.67

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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.