Home / 21,293.06-29,383.96-13,339.66

Finding the Fourth Proportional to 21,293.06, 29,383.96 and 13,339.66

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Solution

The fourth proportional to 21,293.06, 29,383.96 and 13,339.66 is: 18,408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.06 : 29,383.96 = 13,339.66 : x
  2. Step 2: Convert to fraction form
    21,293.06/29,383.96 = 13,339.66/x
  3. Step 3: Cross multiply
    21,293.06x = 29,383.96 × 13,339.66
  4. Step 4: Simplify right side
    21,293.06x = 391,972,035.85
  5. Step 5: Solve for x
    x = 391,972,035.85/21,293.06
  6. Step 6: Final answer
    x = 18,408.44

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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.