Home / 12,072.96-18,078.72-6,869.76

Finding the Fourth Proportional to 12,072.96, 18,078.72 and 6,869.76

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Solution

The fourth proportional to 12,072.96, 18,078.72 and 6,869.76 is: 10,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.96 : 18,078.72 = 6,869.76 : x
  2. Step 2: Convert to fraction form
    12,072.96/18,078.72 = 6,869.76/x
  3. Step 3: Cross multiply
    12,072.96x = 18,078.72 × 6,869.76
  4. Step 4: Simplify right side
    12,072.96x = 124,196,467.51
  5. Step 5: Solve for x
    x = 124,196,467.51/12,072.96
  6. Step 6: Final answer
    x = 10,287.16

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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.