Home / 12,289.22-18,435.06-3,967.28

Finding the Fourth Proportional to 12,289.22, 18,435.06 and 3,967.28

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Solution

The fourth proportional to 12,289.22, 18,435.06 and 3,967.28 is: 5,951.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.22 : 18,435.06 = 3,967.28 : x
  2. Step 2: Convert to fraction form
    12,289.22/18,435.06 = 3,967.28/x
  3. Step 3: Cross multiply
    12,289.22x = 18,435.06 × 3,967.28
  4. Step 4: Simplify right side
    12,289.22x = 73,137,044.84
  5. Step 5: Solve for x
    x = 73,137,044.84/12,289.22
  6. Step 6: Final answer
    x = 5,951.32

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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.