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Finding the Fourth Proportional to 18,793.72, 25,925.40 and 15,250.72

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Solution

The fourth proportional to 18,793.72, 25,925.40 and 15,250.72 is: 21,037.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.72 : 25,925.40 = 15,250.72 : x
  2. Step 2: Convert to fraction form
    18,793.72/25,925.40 = 15,250.72/x
  3. Step 3: Cross multiply
    18,793.72x = 25,925.40 × 15,250.72
  4. Step 4: Simplify right side
    18,793.72x = 395,381,016.29
  5. Step 5: Solve for x
    x = 395,381,016.29/18,793.72
  6. Step 6: Final answer
    x = 21,037.93

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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.