Home / 21,109.44-29,111.52-13,548.48

Finding the Fourth Proportional to 21,109.44, 29,111.52 and 13,548.48

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Solution

The fourth proportional to 21,109.44, 29,111.52 and 13,548.48 is: 18,684.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109.44 : 29,111.52 = 13,548.48 : x
  2. Step 2: Convert to fraction form
    21,109.44/29,111.52 = 13,548.48/x
  3. Step 3: Cross multiply
    21,109.44x = 29,111.52 × 13,548.48
  4. Step 4: Simplify right side
    21,109.44x = 394,416,846.49
  5. Step 5: Solve for x
    x = 394,416,846.49/21,109.44
  6. Step 6: Final answer
    x = 18,684.38

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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.