Home / 31,979.52-47,940.24-11,191.68

Finding the Fourth Proportional to 31,979.52, 47,940.24 and 11,191.68

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Solution

The fourth proportional to 31,979.52, 47,940.24 and 11,191.68 is: 16,777.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.52 : 47,940.24 = 11,191.68 : x
  2. Step 2: Convert to fraction form
    31,979.52/47,940.24 = 11,191.68/x
  3. Step 3: Cross multiply
    31,979.52x = 47,940.24 × 11,191.68
  4. Step 4: Simplify right side
    31,979.52x = 536,531,825.20
  5. Step 5: Solve for x
    x = 536,531,825.20/31,979.52
  6. Step 6: Final answer
    x = 16,777.36

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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.