Home / 12,181.16-18,272.10-4,787.48

Finding the Fourth Proportional to 12,181.16, 18,272.10 and 4,787.48

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Solution

The fourth proportional to 12,181.16, 18,272.10 and 4,787.48 is: 7,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.16 : 18,272.10 = 4,787.48 : x
  2. Step 2: Convert to fraction form
    12,181.16/18,272.10 = 4,787.48/x
  3. Step 3: Cross multiply
    12,181.16x = 18,272.10 × 4,787.48
  4. Step 4: Simplify right side
    12,181.16x = 87,477,313.31
  5. Step 5: Solve for x
    x = 87,477,313.31/12,181.16
  6. Step 6: Final answer
    x = 7,181.36

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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.