Home / 31,785.78-43,861.47-18,862.83

Finding the Fourth Proportional to 31,785.78, 43,861.47 and 18,862.83

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Solution

The fourth proportional to 31,785.78, 43,861.47 and 18,862.83 is: 26,028.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.78 : 43,861.47 = 18,862.83 : x
  2. Step 2: Convert to fraction form
    31,785.78/43,861.47 = 18,862.83/x
  3. Step 3: Cross multiply
    31,785.78x = 43,861.47 × 18,862.83
  4. Step 4: Simplify right side
    31,785.78x = 827,351,452.16
  5. Step 5: Solve for x
    x = 827,351,452.16/31,785.78
  6. Step 6: Final answer
    x = 26,028.98

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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.