Home / 13,633.05-18,814.36-7,665.09

Finding the Fourth Proportional to 13,633.05, 18,814.36 and 7,665.09

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Solution

The fourth proportional to 13,633.05, 18,814.36 and 7,665.09 is: 10,578.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.05 : 18,814.36 = 7,665.09 : x
  2. Step 2: Convert to fraction form
    13,633.05/18,814.36 = 7,665.09/x
  3. Step 3: Cross multiply
    13,633.05x = 18,814.36 × 7,665.09
  4. Step 4: Simplify right side
    13,633.05x = 144,213,762.69
  5. Step 5: Solve for x
    x = 144,213,762.69/13,633.05
  6. Step 6: Final answer
    x = 10,578.25

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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.