Home / 27,717.21-38,249.69-15,142.05

Finding the Fourth Proportional to 27,717.21, 38,249.69 and 15,142.05

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Solution

The fourth proportional to 27,717.21, 38,249.69 and 15,142.05 is: 20,895.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,717.21 : 38,249.69 = 15,142.05 : x
  2. Step 2: Convert to fraction form
    27,717.21/38,249.69 = 15,142.05/x
  3. Step 3: Cross multiply
    27,717.21x = 38,249.69 × 15,142.05
  4. Step 4: Simplify right side
    27,717.21x = 579,178,642.75
  5. Step 5: Solve for x
    x = 579,178,642.75/27,717.21
  6. Step 6: Final answer
    x = 20,895.99

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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.