Home / 13,326.68-18,390.24-7,660.98

Finding the Fourth Proportional to 13,326.68, 18,390.24 and 7,660.98

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Solution

The fourth proportional to 13,326.68, 18,390.24 and 7,660.98 is: 10,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.68 : 18,390.24 = 7,660.98 : x
  2. Step 2: Convert to fraction form
    13,326.68/18,390.24 = 7,660.98/x
  3. Step 3: Cross multiply
    13,326.68x = 18,390.24 × 7,660.98
  4. Step 4: Simplify right side
    13,326.68x = 140,887,260.84
  5. Step 5: Solve for x
    x = 140,887,260.84/13,326.68
  6. Step 6: Final answer
    x = 10,571.82

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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.