Home / 12,120.42-18,180.49-4,730.07

Finding the Fourth Proportional to 12,120.42, 18,180.49 and 4,730.07

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Solution

The fourth proportional to 12,120.42, 18,180.49 and 4,730.07 is: 7,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.42 : 18,180.49 = 4,730.07 : x
  2. Step 2: Convert to fraction form
    12,120.42/18,180.49 = 4,730.07/x
  3. Step 3: Cross multiply
    12,120.42x = 18,180.49 × 4,730.07
  4. Step 4: Simplify right side
    12,120.42x = 85,994,990.33
  5. Step 5: Solve for x
    x = 85,994,990.33/12,120.42
  6. Step 6: Final answer
    x = 7,095.05

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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.