Home / 17,918.43-26,878.67-5,438.87

Finding the Fourth Proportional to 17,918.43, 26,878.67 and 5,438.87

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Solution

The fourth proportional to 17,918.43, 26,878.67 and 5,438.87 is: 8,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918.43 : 26,878.67 = 5,438.87 : x
  2. Step 2: Convert to fraction form
    17,918.43/26,878.67 = 5,438.87/x
  3. Step 3: Cross multiply
    17,918.43x = 26,878.67 × 5,438.87
  4. Step 4: Simplify right side
    17,918.43x = 146,189,471.11
  5. Step 5: Solve for x
    x = 146,189,471.11/17,918.43
  6. Step 6: Final answer
    x = 8,158.61

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1.5x scale

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.