Home / 12,120.68-18,181.04-3,801.35

Finding the Fourth Proportional to 12,120.68, 18,181.04 and 3,801.35

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Solution

The fourth proportional to 12,120.68, 18,181.04 and 3,801.35 is: 5,702.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.68 : 18,181.04 = 3,801.35 : x
  2. Step 2: Convert to fraction form
    12,120.68/18,181.04 = 3,801.35/x
  3. Step 3: Cross multiply
    12,120.68x = 18,181.04 × 3,801.35
  4. Step 4: Simplify right side
    12,120.68x = 69,112,386.49
  5. Step 5: Solve for x
    x = 69,112,386.49/12,120.68
  6. Step 6: Final answer
    x = 5,702.02

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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.