Home / 12,210.60-18,318.69-4,419.42

Finding the Fourth Proportional to 12,210.60, 18,318.69 and 4,419.42

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Solution

The fourth proportional to 12,210.60, 18,318.69 and 4,419.42 is: 6,630.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.60 : 18,318.69 = 4,419.42 : x
  2. Step 2: Convert to fraction form
    12,210.60/18,318.69 = 4,419.42/x
  3. Step 3: Cross multiply
    12,210.60x = 18,318.69 × 4,419.42
  4. Step 4: Simplify right side
    12,210.60x = 80,957,984.96
  5. Step 5: Solve for x
    x = 80,957,984.96/12,210.60
  6. Step 6: Final answer
    x = 6,630.14

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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.