Home / 27,278.77-40,880.83-20,609.79

Finding the Fourth Proportional to 27,278.77, 40,880.83 and 20,609.79

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Solution

The fourth proportional to 27,278.77, 40,880.83 and 20,609.79 is: 30,886.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,278.77 : 40,880.83 = 20,609.79 : x
  2. Step 2: Convert to fraction form
    27,278.77/40,880.83 = 20,609.79/x
  3. Step 3: Cross multiply
    27,278.77x = 40,880.83 × 20,609.79
  4. Step 4: Simplify right side
    27,278.77x = 842,545,321.33
  5. Step 5: Solve for x
    x = 842,545,321.33/27,278.77
  6. Step 6: Final answer
    x = 30,886.49

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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.