Home / 21,179.97-29,228.36-11,750.35

Finding the Fourth Proportional to 21,179.97, 29,228.36 and 11,750.35

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Solution

The fourth proportional to 21,179.97, 29,228.36 and 11,750.35 is: 16,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.97 : 29,228.36 = 11,750.35 : x
  2. Step 2: Convert to fraction form
    21,179.97/29,228.36 = 11,750.35/x
  3. Step 3: Cross multiply
    21,179.97x = 29,228.36 × 11,750.35
  4. Step 4: Simplify right side
    21,179.97x = 343,443,459.93
  5. Step 5: Solve for x
    x = 343,443,459.93/21,179.97
  6. Step 6: Final answer
    x = 16,215.48

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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.