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Finding the Fourth Proportional to 18,421.51, 27,624.15 and 5,270.89

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Solution

The fourth proportional to 18,421.51, 27,624.15 and 5,270.89 is: 7,904.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.51 : 27,624.15 = 5,270.89 : x
  2. Step 2: Convert to fraction form
    18,421.51/27,624.15 = 5,270.89/x
  3. Step 3: Cross multiply
    18,421.51x = 27,624.15 × 5,270.89
  4. Step 4: Simplify right side
    18,421.51x = 145,603,855.99
  5. Step 5: Solve for x
    x = 145,603,855.99/18,421.51
  6. Step 6: Final answer
    x = 7,904.01

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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.