Home / 31,979.37-47,969.21-8,285.25

Finding the Fourth Proportional to 31,979.37, 47,969.21 and 8,285.25

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Solution

The fourth proportional to 31,979.37, 47,969.21 and 8,285.25 is: 12,427.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.37 : 47,969.21 = 8,285.25 : x
  2. Step 2: Convert to fraction form
    31,979.37/47,969.21 = 8,285.25/x
  3. Step 3: Cross multiply
    31,979.37x = 47,969.21 × 8,285.25
  4. Step 4: Simplify right side
    31,979.37x = 397,437,097.75
  5. Step 5: Solve for x
    x = 397,437,097.75/31,979.37
  6. Step 6: Final answer
    x = 12,427.92

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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.