Home / 18,372.10-27,521.70-10,039.90

Finding the Fourth Proportional to 18,372.10, 27,521.70 and 10,039.90

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Solution

The fourth proportional to 18,372.10, 27,521.70 and 10,039.90 is: 15,039.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.10 : 27,521.70 = 10,039.90 : x
  2. Step 2: Convert to fraction form
    18,372.10/27,521.70 = 10,039.90/x
  3. Step 3: Cross multiply
    18,372.10x = 27,521.70 × 10,039.90
  4. Step 4: Simplify right side
    18,372.10x = 276,315,115.83
  5. Step 5: Solve for x
    x = 276,315,115.83/18,372.10
  6. Step 6: Final answer
    x = 15,039.93

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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.