Home / 18,420.51-27,622.65-5,269.89

Finding the Fourth Proportional to 18,420.51, 27,622.65 and 5,269.89

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Solution

The fourth proportional to 18,420.51, 27,622.65 and 5,269.89 is: 7,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.51 : 27,622.65 = 5,269.89 : x
  2. Step 2: Convert to fraction form
    18,420.51/27,622.65 = 5,269.89/x
  3. Step 3: Cross multiply
    18,420.51x = 27,622.65 × 5,269.89
  4. Step 4: Simplify right side
    18,420.51x = 145,568,327.01
  5. Step 5: Solve for x
    x = 145,568,327.01/18,420.51
  6. Step 6: Final answer
    x = 7,902.51

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Why These Related Problems?

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