Home / 21,713.44-29,954.16-12,638.80

Finding the Fourth Proportional to 21,713.44, 29,954.16 and 12,638.80

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Solution

The fourth proportional to 21,713.44, 29,954.16 and 12,638.80 is: 17,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,713.44 : 29,954.16 = 12,638.80 : x
  2. Step 2: Convert to fraction form
    21,713.44/29,954.16 = 12,638.80/x
  3. Step 3: Cross multiply
    21,713.44x = 29,954.16 × 12,638.80
  4. Step 4: Simplify right side
    21,713.44x = 378,584,637.41
  5. Step 5: Solve for x
    x = 378,584,637.41/21,713.44
  6. Step 6: Final answer
    x = 17,435.50

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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.