Home / 12,882.12-19,292.16-7,321.86

Finding the Fourth Proportional to 12,882.12, 19,292.16 and 7,321.86

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Solution

The fourth proportional to 12,882.12, 19,292.16 and 7,321.86 is: 10,965.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.12 : 19,292.16 = 7,321.86 : x
  2. Step 2: Convert to fraction form
    12,882.12/19,292.16 = 7,321.86/x
  3. Step 3: Cross multiply
    12,882.12x = 19,292.16 × 7,321.86
  4. Step 4: Simplify right side
    12,882.12x = 141,254,494.62
  5. Step 5: Solve for x
    x = 141,254,494.62/12,882.12
  6. Step 6: Final answer
    x = 10,965.16

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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.