Home / 31,769.80-47,622.30-18,615.40

Finding the Fourth Proportional to 31,769.80, 47,622.30 and 18,615.40

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Solution

The fourth proportional to 31,769.80, 47,622.30 and 18,615.40 is: 27,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,769.80 : 47,622.30 = 18,615.40 : x
  2. Step 2: Convert to fraction form
    31,769.80/47,622.30 = 18,615.40/x
  3. Step 3: Cross multiply
    31,769.80x = 47,622.30 × 18,615.40
  4. Step 4: Simplify right side
    31,769.80x = 886,508,163.42
  5. Step 5: Solve for x
    x = 886,508,163.42/31,769.80
  6. Step 6: Final answer
    x = 27,904.12

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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.