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Finding the Fourth Proportional to 18,699.31, 25,803.26 and 10,315.27

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Solution

The fourth proportional to 18,699.31, 25,803.26 and 10,315.27 is: 14,234.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.31 : 25,803.26 = 10,315.27 : x
  2. Step 2: Convert to fraction form
    18,699.31/25,803.26 = 10,315.27/x
  3. Step 3: Cross multiply
    18,699.31x = 25,803.26 × 10,315.27
  4. Step 4: Simplify right side
    18,699.31x = 266,167,542.20
  5. Step 5: Solve for x
    x = 266,167,542.20/18,699.31
  6. Step 6: Final answer
    x = 14,234.08

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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.