Home / 31,996.80-47,995.20-11,222.40

Finding the Fourth Proportional to 31,996.80, 47,995.20 and 11,222.40

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Solution

The fourth proportional to 31,996.80, 47,995.20 and 11,222.40 is: 16,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,996.80 : 47,995.20 = 11,222.40 : x
  2. Step 2: Convert to fraction form
    31,996.80/47,995.20 = 11,222.40/x
  3. Step 3: Cross multiply
    31,996.80x = 47,995.20 × 11,222.40
  4. Step 4: Simplify right side
    31,996.80x = 538,621,332.48
  5. Step 5: Solve for x
    x = 538,621,332.48/31,996.80
  6. Step 6: Final answer
    x = 16,833.60

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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.