Home / 12,483.21-18,724.78-6,236.90

Finding the Fourth Proportional to 12,483.21, 18,724.78 and 6,236.90

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Solution

The fourth proportional to 12,483.21, 18,724.78 and 6,236.90 is: 9,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.21 : 18,724.78 = 6,236.90 : x
  2. Step 2: Convert to fraction form
    12,483.21/18,724.78 = 6,236.90/x
  3. Step 3: Cross multiply
    12,483.21x = 18,724.78 × 6,236.90
  4. Step 4: Simplify right side
    12,483.21x = 116,784,455.57
  5. Step 5: Solve for x
    x = 116,784,455.57/12,483.21
  6. Step 6: Final answer
    x = 9,355.32

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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.