Home / 12,639.33-18,957.36-3,873.51

Finding the Fourth Proportional to 12,639.33, 18,957.36 and 3,873.51

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Solution

The fourth proportional to 12,639.33, 18,957.36 and 3,873.51 is: 5,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.33 : 18,957.36 = 3,873.51 : x
  2. Step 2: Convert to fraction form
    12,639.33/18,957.36 = 3,873.51/x
  3. Step 3: Cross multiply
    12,639.33x = 18,957.36 × 3,873.51
  4. Step 4: Simplify right side
    12,639.33x = 73,431,523.53
  5. Step 5: Solve for x
    x = 73,431,523.53/12,639.33
  6. Step 6: Final answer
    x = 5,809.76

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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.