Home / 20,256.53-27,954.02-11,181.90

Finding the Fourth Proportional to 20,256.53, 27,954.02 and 11,181.90

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Solution

The fourth proportional to 20,256.53, 27,954.02 and 11,181.90 is: 15,431.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,256.53 : 27,954.02 = 11,181.90 : x
  2. Step 2: Convert to fraction form
    20,256.53/27,954.02 = 11,181.90/x
  3. Step 3: Cross multiply
    20,256.53x = 27,954.02 × 11,181.90
  4. Step 4: Simplify right side
    20,256.53x = 312,578,860.56
  5. Step 5: Solve for x
    x = 312,578,860.56/20,256.53
  6. Step 6: Final answer
    x = 15,431.02

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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.