Home / 13,189.05-19,766.66-5,388.57

Finding the Fourth Proportional to 13,189.05, 19,766.66 and 5,388.57

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Solution

The fourth proportional to 13,189.05, 19,766.66 and 5,388.57 is: 8,075.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.05 : 19,766.66 = 5,388.57 : x
  2. Step 2: Convert to fraction form
    13,189.05/19,766.66 = 5,388.57/x
  3. Step 3: Cross multiply
    13,189.05x = 19,766.66 × 5,388.57
  4. Step 4: Simplify right side
    13,189.05x = 106,514,004.13
  5. Step 5: Solve for x
    x = 106,514,004.13/13,189.05
  6. Step 6: Final answer
    x = 8,075.94

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1.5x scale

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.