Home / 18,089.12-27,129.43-4,938.36

Finding the Fourth Proportional to 18,089.12, 27,129.43 and 4,938.36

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Solution

The fourth proportional to 18,089.12, 27,129.43 and 4,938.36 is: 7,406.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,089.12 : 27,129.43 = 4,938.36 : x
  2. Step 2: Convert to fraction form
    18,089.12/27,129.43 = 4,938.36/x
  3. Step 3: Cross multiply
    18,089.12x = 27,129.43 × 4,938.36
  4. Step 4: Simplify right side
    18,089.12x = 133,974,891.93
  5. Step 5: Solve for x
    x = 133,974,891.93/18,089.12
  6. Step 6: Final answer
    x = 7,406.38

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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.