Home / 13,878.72-20,892.96-12,673.44

Finding the Fourth Proportional to 13,878.72, 20,892.96 and 12,673.44

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Solution

The fourth proportional to 13,878.72, 20,892.96 and 12,673.44 is: 19,078.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.72 : 20,892.96 = 12,673.44 : x
  2. Step 2: Convert to fraction form
    13,878.72/20,892.96 = 12,673.44/x
  3. Step 3: Cross multiply
    13,878.72x = 20,892.96 × 12,673.44
  4. Step 4: Simplify right side
    13,878.72x = 264,785,674.98
  5. Step 5: Solve for x
    x = 264,785,674.98/13,878.72
  6. Step 6: Final answer
    x = 19,078.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.