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Finding the Fourth Proportional to 15,015.88, 20,721.27 and 8,301.16

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Solution

The fourth proportional to 15,015.88, 20,721.27 and 8,301.16 is: 11,455.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.88 : 20,721.27 = 8,301.16 : x
  2. Step 2: Convert to fraction form
    15,015.88/20,721.27 = 8,301.16/x
  3. Step 3: Cross multiply
    15,015.88x = 20,721.27 × 8,301.16
  4. Step 4: Simplify right side
    15,015.88x = 172,010,577.67
  5. Step 5: Solve for x
    x = 172,010,577.67/15,015.88
  6. Step 6: Final answer
    x = 11,455.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.