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Finding the Fourth Proportional to 19,645.72, 27,111.17 and 10,693.18

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Solution

The fourth proportional to 19,645.72, 27,111.17 and 10,693.18 is: 14,756.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.72 : 27,111.17 = 10,693.18 : x
  2. Step 2: Convert to fraction form
    19,645.72/27,111.17 = 10,693.18/x
  3. Step 3: Cross multiply
    19,645.72x = 27,111.17 × 10,693.18
  4. Step 4: Simplify right side
    19,645.72x = 289,904,681.44
  5. Step 5: Solve for x
    x = 289,904,681.44/19,645.72
  6. Step 6: Final answer
    x = 14,756.63

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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.