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Finding the Fourth Proportional to 31,992.80, 47,989.20 and 23,730.80

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Solution

The fourth proportional to 31,992.80, 47,989.20 and 23,730.80 is: 35,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,992.80 : 47,989.20 = 23,730.80 : x
  2. Step 2: Convert to fraction form
    31,992.80/47,989.20 = 23,730.80/x
  3. Step 3: Cross multiply
    31,992.80x = 47,989.20 × 23,730.80
  4. Step 4: Simplify right side
    31,992.80x = 1,138,822,107.36
  5. Step 5: Solve for x
    x = 1,138,822,107.36/31,992.80
  6. Step 6: Final answer
    x = 35,596.20

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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.