Home / 20,143.32-27,796.15-11,645.99

Finding the Fourth Proportional to 20,143.32, 27,796.15 and 11,645.99

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Solution

The fourth proportional to 20,143.32, 27,796.15 and 11,645.99 is: 16,070.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.32 : 27,796.15 = 11,645.99 : x
  2. Step 2: Convert to fraction form
    20,143.32/27,796.15 = 11,645.99/x
  3. Step 3: Cross multiply
    20,143.32x = 27,796.15 × 11,645.99
  4. Step 4: Simplify right side
    20,143.32x = 323,713,617.94
  5. Step 5: Solve for x
    x = 323,713,617.94/20,143.32
  6. Step 6: Final answer
    x = 16,070.52

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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.