Home / 18,431.10-27,641.76-5,279.94

Finding the Fourth Proportional to 18,431.10, 27,641.76 and 5,279.94

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Solution

The fourth proportional to 18,431.10, 27,641.76 and 5,279.94 is: 7,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.10 : 27,641.76 = 5,279.94 : x
  2. Step 2: Convert to fraction form
    18,431.10/27,641.76 = 5,279.94/x
  3. Step 3: Cross multiply
    18,431.10x = 27,641.76 × 5,279.94
  4. Step 4: Simplify right side
    18,431.10x = 145,946,834.29
  5. Step 5: Solve for x
    x = 145,946,834.29/18,431.10
  6. Step 6: Final answer
    x = 7,918.51

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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.