Home / 12,555.89-18,833.97-3,790.88

Finding the Fourth Proportional to 12,555.89, 18,833.97 and 3,790.88

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Solution

The fourth proportional to 12,555.89, 18,833.97 and 3,790.88 is: 5,686.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.89 : 18,833.97 = 3,790.88 : x
  2. Step 2: Convert to fraction form
    12,555.89/18,833.97 = 3,790.88/x
  3. Step 3: Cross multiply
    12,555.89x = 18,833.97 × 3,790.88
  4. Step 4: Simplify right side
    12,555.89x = 71,397,320.19
  5. Step 5: Solve for x
    x = 71,397,320.19/12,555.89
  6. Step 6: Final answer
    x = 5,686.36

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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.