Home / 12,555.66-18,836.54-3,790.05

Finding the Fourth Proportional to 12,555.66, 18,836.54 and 3,790.05

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Solution

The fourth proportional to 12,555.66, 18,836.54 and 3,790.05 is: 5,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.66 : 18,836.54 = 3,790.05 : x
  2. Step 2: Convert to fraction form
    12,555.66/18,836.54 = 3,790.05/x
  3. Step 3: Cross multiply
    12,555.66x = 18,836.54 × 3,790.05
  4. Step 4: Simplify right side
    12,555.66x = 71,391,409.48
  5. Step 5: Solve for x
    x = 71,391,409.48/12,555.66
  6. Step 6: Final answer
    x = 5,685.99

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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.