Home / 12,143.48-18,215.36-3,823.32

Finding the Fourth Proportional to 12,143.48, 18,215.36 and 3,823.32

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Solution

The fourth proportional to 12,143.48, 18,215.36 and 3,823.32 is: 5,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.48 : 18,215.36 = 3,823.32 : x
  2. Step 2: Convert to fraction form
    12,143.48/18,215.36 = 3,823.32/x
  3. Step 3: Cross multiply
    12,143.48x = 18,215.36 × 3,823.32
  4. Step 4: Simplify right side
    12,143.48x = 69,643,150.20
  5. Step 5: Solve for x
    x = 69,643,150.20/12,143.48
  6. Step 6: Final answer
    x = 5,735.02

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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.