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Finding the Fourth Proportional to 31,253.16, 46,879.95 and 12,785.16

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Solution

The fourth proportional to 31,253.16, 46,879.95 and 12,785.16 is: 19,177.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,253.16 : 46,879.95 = 12,785.16 : x
  2. Step 2: Convert to fraction form
    31,253.16/46,879.95 = 12,785.16/x
  3. Step 3: Cross multiply
    31,253.16x = 46,879.95 × 12,785.16
  4. Step 4: Simplify right side
    31,253.16x = 599,367,661.54
  5. Step 5: Solve for x
    x = 599,367,661.54/31,253.16
  6. Step 6: Final answer
    x = 19,177.83

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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.