Home / 10,205.75-15,291.14-7,983.69

Finding the Fourth Proportional to 10,205.75, 15,291.14 and 7,983.69

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Solution

The fourth proportional to 10,205.75, 15,291.14 and 7,983.69 is: 11,961.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.75 : 15,291.14 = 7,983.69 : x
  2. Step 2: Convert to fraction form
    10,205.75/15,291.14 = 7,983.69/x
  3. Step 3: Cross multiply
    10,205.75x = 15,291.14 × 7,983.69
  4. Step 4: Simplify right side
    10,205.75x = 122,079,681.59
  5. Step 5: Solve for x
    x = 122,079,681.59/10,205.75
  6. Step 6: Final answer
    x = 11,961.86

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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.