Home / 12,893.37-19,305.39-8,187.90

Finding the Fourth Proportional to 12,893.37, 19,305.39 and 8,187.90

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Solution

The fourth proportional to 12,893.37, 19,305.39 and 8,187.90 is: 12,259.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.37 : 19,305.39 = 8,187.90 : x
  2. Step 2: Convert to fraction form
    12,893.37/19,305.39 = 8,187.90/x
  3. Step 3: Cross multiply
    12,893.37x = 19,305.39 × 8,187.90
  4. Step 4: Simplify right side
    12,893.37x = 158,070,602.78
  5. Step 5: Solve for x
    x = 158,070,602.78/12,893.37
  6. Step 6: Final answer
    x = 12,259.84

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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.