Home / 12,121.62-18,187.90-5,880.48

Finding the Fourth Proportional to 12,121.62, 18,187.90 and 5,880.48

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Solution

The fourth proportional to 12,121.62, 18,187.90 and 5,880.48 is: 8,823.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.62 : 18,187.90 = 5,880.48 : x
  2. Step 2: Convert to fraction form
    12,121.62/18,187.90 = 5,880.48/x
  3. Step 3: Cross multiply
    12,121.62x = 18,187.90 × 5,880.48
  4. Step 4: Simplify right side
    12,121.62x = 106,953,582.19
  5. Step 5: Solve for x
    x = 106,953,582.19/12,121.62
  6. Step 6: Final answer
    x = 8,823.37

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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.