Home / 12,785.52-19,174.60-5,391.64

Finding the Fourth Proportional to 12,785.52, 19,174.60 and 5,391.64

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Solution

The fourth proportional to 12,785.52, 19,174.60 and 5,391.64 is: 8,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.52 : 19,174.60 = 5,391.64 : x
  2. Step 2: Convert to fraction form
    12,785.52/19,174.60 = 5,391.64/x
  3. Step 3: Cross multiply
    12,785.52x = 19,174.60 × 5,391.64
  4. Step 4: Simplify right side
    12,785.52x = 103,382,540.34
  5. Step 5: Solve for x
    x = 103,382,540.34/12,785.52
  6. Step 6: Final answer
    x = 8,085.91

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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.