Home / 20,216.95-27,899.04-11,142.61

Finding the Fourth Proportional to 20,216.95, 27,899.04 and 11,142.61

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Solution

The fourth proportional to 20,216.95, 27,899.04 and 11,142.61 is: 15,376.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.95 : 27,899.04 = 11,142.61 : x
  2. Step 2: Convert to fraction form
    20,216.95/27,899.04 = 11,142.61/x
  3. Step 3: Cross multiply
    20,216.95x = 27,899.04 × 11,142.61
  4. Step 4: Simplify right side
    20,216.95x = 310,868,122.09
  5. Step 5: Solve for x
    x = 310,868,122.09/20,216.95
  6. Step 6: Final answer
    x = 15,376.61

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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.