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Finding the Fourth Proportional to 18,454.87, 25,471.87 and 12,077.76

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Solution

The fourth proportional to 18,454.87, 25,471.87 and 12,077.76 is: 16,670.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.87 : 25,471.87 = 12,077.76 : x
  2. Step 2: Convert to fraction form
    18,454.87/25,471.87 = 12,077.76/x
  3. Step 3: Cross multiply
    18,454.87x = 25,471.87 × 12,077.76
  4. Step 4: Simplify right side
    18,454.87x = 307,643,102.42
  5. Step 5: Solve for x
    x = 307,643,102.42/18,454.87
  6. Step 6: Final answer
    x = 16,670.02

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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.