Home / 12,639.09-18,957.12-4,318.93

Finding the Fourth Proportional to 12,639.09, 18,957.12 and 4,318.93

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Solution

The fourth proportional to 12,639.09, 18,957.12 and 4,318.93 is: 6,477.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.09 : 18,957.12 = 4,318.93 : x
  2. Step 2: Convert to fraction form
    12,639.09/18,957.12 = 4,318.93/x
  3. Step 3: Cross multiply
    12,639.09x = 18,957.12 × 4,318.93
  4. Step 4: Simplify right side
    12,639.09x = 81,874,481.78
  5. Step 5: Solve for x
    x = 81,874,481.78/12,639.09
  6. Step 6: Final answer
    x = 6,477.88

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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.