Home / 21,277.41-29,371.91-15,149.06

Finding the Fourth Proportional to 21,277.41, 29,371.91 and 15,149.06

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Solution

The fourth proportional to 21,277.41, 29,371.91 and 15,149.06 is: 20,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.41 : 29,371.91 = 15,149.06 : x
  2. Step 2: Convert to fraction form
    21,277.41/29,371.91 = 15,149.06/x
  3. Step 3: Cross multiply
    21,277.41x = 29,371.91 × 15,149.06
  4. Step 4: Simplify right side
    21,277.41x = 444,956,824.59
  5. Step 5: Solve for x
    x = 444,956,824.59/21,277.41
  6. Step 6: Final answer
    x = 20,912.17

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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.