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Finding the Fourth Proportional to 28,101.45, 38,788.08 and 18,548.31

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Solution

The fourth proportional to 28,101.45, 38,788.08 and 18,548.31 is: 25,601.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.45 : 38,788.08 = 18,548.31 : x
  2. Step 2: Convert to fraction form
    28,101.45/38,788.08 = 18,548.31/x
  3. Step 3: Cross multiply
    28,101.45x = 38,788.08 × 18,548.31
  4. Step 4: Simplify right side
    28,101.45x = 719,453,045.46
  5. Step 5: Solve for x
    x = 719,453,045.46/28,101.45
  6. Step 6: Final answer
    x = 25,601.99

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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.