Home / 12,787.36-19,186.40-5,393.44

Finding the Fourth Proportional to 12,787.36, 19,186.40 and 5,393.44

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Solution

The fourth proportional to 12,787.36, 19,186.40 and 5,393.44 is: 8,092.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.36 : 19,186.40 = 5,393.44 : x
  2. Step 2: Convert to fraction form
    12,787.36/19,186.40 = 5,393.44/x
  3. Step 3: Cross multiply
    12,787.36x = 19,186.40 × 5,393.44
  4. Step 4: Simplify right side
    12,787.36x = 103,480,697.22
  5. Step 5: Solve for x
    x = 103,480,697.22/12,787.36
  6. Step 6: Final answer
    x = 8,092.42

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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.