Home / 10,399.28-14,326.68-7,249.84

Finding the Fourth Proportional to 10,399.28, 14,326.68 and 7,249.84

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Solution

The fourth proportional to 10,399.28, 14,326.68 and 7,249.84 is: 9,987.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.28 : 14,326.68 = 7,249.84 : x
  2. Step 2: Convert to fraction form
    10,399.28/14,326.68 = 7,249.84/x
  3. Step 3: Cross multiply
    10,399.28x = 14,326.68 × 7,249.84
  4. Step 4: Simplify right side
    10,399.28x = 103,866,137.73
  5. Step 5: Solve for x
    x = 103,866,137.73/10,399.28
  6. Step 6: Final answer
    x = 9,987.82

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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.