Home / 31,967.20-47,932.80-12,246.40

Finding the Fourth Proportional to 31,967.20, 47,932.80 and 12,246.40

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Solution

The fourth proportional to 31,967.20, 47,932.80 and 12,246.40 is: 18,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,967.20 : 47,932.80 = 12,246.40 : x
  2. Step 2: Convert to fraction form
    31,967.20/47,932.80 = 12,246.40/x
  3. Step 3: Cross multiply
    31,967.20x = 47,932.80 × 12,246.40
  4. Step 4: Simplify right side
    31,967.20x = 587,004,241.92
  5. Step 5: Solve for x
    x = 587,004,241.92/31,967.20
  6. Step 6: Final answer
    x = 18,362.70

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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.