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Finding the Fourth Proportional to 18,925.60, 28,387.44 and 7,237.92

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Solution

The fourth proportional to 18,925.60, 28,387.44 and 7,237.92 is: 10,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.60 : 28,387.44 = 7,237.92 : x
  2. Step 2: Convert to fraction form
    18,925.60/28,387.44 = 7,237.92/x
  3. Step 3: Cross multiply
    18,925.60x = 28,387.44 × 7,237.92
  4. Step 4: Simplify right side
    18,925.60x = 205,466,019.72
  5. Step 5: Solve for x
    x = 205,466,019.72/18,925.60
  6. Step 6: Final answer
    x = 10,856.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.