Home / 20,839.44-28,758.48-11,408.07

Finding the Fourth Proportional to 20,839.44, 28,758.48 and 11,408.07

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Solution

The fourth proportional to 20,839.44, 28,758.48 and 11,408.07 is: 15,743.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.44 : 28,758.48 = 11,408.07 : x
  2. Step 2: Convert to fraction form
    20,839.44/28,758.48 = 11,408.07/x
  3. Step 3: Cross multiply
    20,839.44x = 28,758.48 × 11,408.07
  4. Step 4: Simplify right side
    20,839.44x = 328,078,752.93
  5. Step 5: Solve for x
    x = 328,078,752.93/20,839.44
  6. Step 6: Final answer
    x = 15,743.17

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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.