Home / 27,880.12-41,731.62-20,818.36

Finding the Fourth Proportional to 27,880.12, 41,731.62 and 20,818.36

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Solution

The fourth proportional to 27,880.12, 41,731.62 and 20,818.36 is: 31,161.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,880.12 : 41,731.62 = 20,818.36 : x
  2. Step 2: Convert to fraction form
    27,880.12/41,731.62 = 20,818.36/x
  3. Step 3: Cross multiply
    27,880.12x = 41,731.62 × 20,818.36
  4. Step 4: Simplify right side
    27,880.12x = 868,783,888.54
  5. Step 5: Solve for x
    x = 868,783,888.54/27,880.12
  6. Step 6: Final answer
    x = 31,161.41

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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.