Home / 13,381.05-18,464.10-7,716.01

Finding the Fourth Proportional to 13,381.05, 18,464.10 and 7,716.01

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Solution

The fourth proportional to 13,381.05, 18,464.10 and 7,716.01 is: 10,647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.05 : 18,464.10 = 7,716.01 : x
  2. Step 2: Convert to fraction form
    13,381.05/18,464.10 = 7,716.01/x
  3. Step 3: Cross multiply
    13,381.05x = 18,464.10 × 7,716.01
  4. Step 4: Simplify right side
    13,381.05x = 142,469,180.24
  5. Step 5: Solve for x
    x = 142,469,180.24/13,381.05
  6. Step 6: Final answer
    x = 10,647.09

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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.