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Finding the Fourth Proportional to 12,654.37, 18,988.41 and 5,263.93

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Solution

The fourth proportional to 12,654.37, 18,988.41 and 5,263.93 is: 7,898.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.37 : 18,988.41 = 5,263.93 : x
  2. Step 2: Convert to fraction form
    12,654.37/18,988.41 = 5,263.93/x
  3. Step 3: Cross multiply
    12,654.37x = 18,988.41 × 5,263.93
  4. Step 4: Simplify right side
    12,654.37x = 99,953,661.05
  5. Step 5: Solve for x
    x = 99,953,661.05/12,654.37
  6. Step 6: Final answer
    x = 7,898.75

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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.