Home / 15,111.97-20,847.82-10,071.28

Finding the Fourth Proportional to 15,111.97, 20,847.82 and 10,071.28

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Solution

The fourth proportional to 15,111.97, 20,847.82 and 10,071.28 is: 13,893.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.97 : 20,847.82 = 10,071.28 : x
  2. Step 2: Convert to fraction form
    15,111.97/20,847.82 = 10,071.28/x
  3. Step 3: Cross multiply
    15,111.97x = 20,847.82 × 10,071.28
  4. Step 4: Simplify right side
    15,111.97x = 209,964,232.61
  5. Step 5: Solve for x
    x = 209,964,232.61/15,111.97
  6. Step 6: Final answer
    x = 13,893.90

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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.