Home / 13,633.20-18,814.68-7,665.26

Finding the Fourth Proportional to 13,633.20, 18,814.68 and 7,665.26

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Solution

The fourth proportional to 13,633.20, 18,814.68 and 7,665.26 is: 10,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.20 : 18,814.68 = 7,665.26 : x
  2. Step 2: Convert to fraction form
    13,633.20/18,814.68 = 7,665.26/x
  3. Step 3: Cross multiply
    13,633.20x = 18,814.68 × 7,665.26
  4. Step 4: Simplify right side
    13,633.20x = 144,219,319.94
  5. Step 5: Solve for x
    x = 144,219,319.94/13,633.20
  6. Step 6: Final answer
    x = 10,578.54

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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.