Home / 21,180.82-29,228.78-11,750.26

Finding the Fourth Proportional to 21,180.82, 29,228.78 and 11,750.26

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Solution

The fourth proportional to 21,180.82, 29,228.78 and 11,750.26 is: 16,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.82 : 29,228.78 = 11,750.26 : x
  2. Step 2: Convert to fraction form
    21,180.82/29,228.78 = 11,750.26/x
  3. Step 3: Cross multiply
    21,180.82x = 29,228.78 × 11,750.26
  4. Step 4: Simplify right side
    21,180.82x = 343,445,764.48
  5. Step 5: Solve for x
    x = 343,445,764.48/21,180.82
  6. Step 6: Final answer
    x = 16,214.94

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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.