Home / 13,371.78-18,455.13-7,629.24

Finding the Fourth Proportional to 13,371.78, 18,455.13 and 7,629.24

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Solution

The fourth proportional to 13,371.78, 18,455.13 and 7,629.24 is: 10,529.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.78 : 18,455.13 = 7,629.24 : x
  2. Step 2: Convert to fraction form
    13,371.78/18,455.13 = 7,629.24/x
  3. Step 3: Cross multiply
    13,371.78x = 18,455.13 × 7,629.24
  4. Step 4: Simplify right side
    13,371.78x = 140,798,616.00
  5. Step 5: Solve for x
    x = 140,798,616.00/13,371.78
  6. Step 6: Final answer
    x = 10,529.53

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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.