Home / 13,629.27-18,808.47-7,660.77

Finding the Fourth Proportional to 13,629.27, 18,808.47 and 7,660.77

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Solution

The fourth proportional to 13,629.27, 18,808.47 and 7,660.77 is: 10,571.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.27 : 18,808.47 = 7,660.77 : x
  2. Step 2: Convert to fraction form
    13,629.27/18,808.47 = 7,660.77/x
  3. Step 3: Cross multiply
    13,629.27x = 18,808.47 × 7,660.77
  4. Step 4: Simplify right side
    13,629.27x = 144,087,362.72
  5. Step 5: Solve for x
    x = 144,087,362.72/13,629.27
  6. Step 6: Final answer
    x = 10,571.91

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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.