Home / 21,180.38-29,228.93-11,748.94

Finding the Fourth Proportional to 21,180.38, 29,228.93 and 11,748.94

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Solution

The fourth proportional to 21,180.38, 29,228.93 and 11,748.94 is: 16,213.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.38 : 29,228.93 = 11,748.94 : x
  2. Step 2: Convert to fraction form
    21,180.38/29,228.93 = 11,748.94/x
  3. Step 3: Cross multiply
    21,180.38x = 29,228.93 × 11,748.94
  4. Step 4: Simplify right side
    21,180.38x = 343,408,944.83
  5. Step 5: Solve for x
    x = 343,408,944.83/21,180.38
  6. Step 6: Final answer
    x = 16,213.54

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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.