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Finding the Fourth Proportional to 15,672.99, 21,607.37 and 11,188.95

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Solution

The fourth proportional to 15,672.99, 21,607.37 and 11,188.95 is: 15,425.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.99 : 21,607.37 = 11,188.95 : x
  2. Step 2: Convert to fraction form
    15,672.99/21,607.37 = 11,188.95/x
  3. Step 3: Cross multiply
    15,672.99x = 21,607.37 × 11,188.95
  4. Step 4: Simplify right side
    15,672.99x = 241,763,872.03
  5. Step 5: Solve for x
    x = 241,763,872.03/15,672.99
  6. Step 6: Final answer
    x = 15,425.51

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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.