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Finding the Fourth Proportional to 17,130.72, 23,633.47 and 11,390.93

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Solution

The fourth proportional to 17,130.72, 23,633.47 and 11,390.93 is: 15,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,130.72 : 23,633.47 = 11,390.93 : x
  2. Step 2: Convert to fraction form
    17,130.72/23,633.47 = 11,390.93/x
  3. Step 3: Cross multiply
    17,130.72x = 23,633.47 × 11,390.93
  4. Step 4: Simplify right side
    17,130.72x = 269,207,202.43
  5. Step 5: Solve for x
    x = 269,207,202.43/17,130.72
  6. Step 6: Final answer
    x = 15,714.88

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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.