Home / 31,344.20-47,015.81-12,623.80

Finding the Fourth Proportional to 31,344.20, 47,015.81 and 12,623.80

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Solution

The fourth proportional to 31,344.20, 47,015.81 and 12,623.80 is: 18,935.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,344.20 : 47,015.81 = 12,623.80 : x
  2. Step 2: Convert to fraction form
    31,344.20/47,015.81 = 12,623.80/x
  3. Step 3: Cross multiply
    31,344.20x = 47,015.81 × 12,623.80
  4. Step 4: Simplify right side
    31,344.20x = 593,517,884.08
  5. Step 5: Solve for x
    x = 593,517,884.08/31,344.20
  6. Step 6: Final answer
    x = 18,935.49

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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.