Home / 12,420.59-18,626.93-4,099.05

Finding the Fourth Proportional to 12,420.59, 18,626.93 and 4,099.05

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Solution

The fourth proportional to 12,420.59, 18,626.93 and 4,099.05 is: 6,147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.59 : 18,626.93 = 4,099.05 : x
  2. Step 2: Convert to fraction form
    12,420.59/18,626.93 = 4,099.05/x
  3. Step 3: Cross multiply
    12,420.59x = 18,626.93 × 4,099.05
  4. Step 4: Simplify right side
    12,420.59x = 76,352,717.42
  5. Step 5: Solve for x
    x = 76,352,717.42/12,420.59
  6. Step 6: Final answer
    x = 6,147.27

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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.