Home / 13,448.36-20,129.36-7,192.72

Finding the Fourth Proportional to 13,448.36, 20,129.36 and 7,192.72

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Solution

The fourth proportional to 13,448.36, 20,129.36 and 7,192.72 is: 10,765.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.36 : 20,129.36 = 7,192.72 : x
  2. Step 2: Convert to fraction form
    13,448.36/20,129.36 = 7,192.72/x
  3. Step 3: Cross multiply
    13,448.36x = 20,129.36 × 7,192.72
  4. Step 4: Simplify right side
    13,448.36x = 144,784,850.26
  5. Step 5: Solve for x
    x = 144,784,850.26/13,448.36
  6. Step 6: Final answer
    x = 10,765.99

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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.