Home / 27,431.20-37,829.05-18,919.72

Finding the Fourth Proportional to 27,431.20, 37,829.05 and 18,919.72

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Solution

The fourth proportional to 27,431.20, 37,829.05 and 18,919.72 is: 26,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,431.20 : 37,829.05 = 18,919.72 : x
  2. Step 2: Convert to fraction form
    27,431.20/37,829.05 = 18,919.72/x
  3. Step 3: Cross multiply
    27,431.20x = 37,829.05 × 18,919.72
  4. Step 4: Simplify right side
    27,431.20x = 715,715,033.87
  5. Step 5: Solve for x
    x = 715,715,033.87/27,431.20
  6. Step 6: Final answer
    x = 26,091.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.