Home / 12,021.20-18,019.65-5,452.10

Finding the Fourth Proportional to 12,021.20, 18,019.65 and 5,452.10

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Solution

The fourth proportional to 12,021.20, 18,019.65 and 5,452.10 is: 8,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.20 : 18,019.65 = 5,452.10 : x
  2. Step 2: Convert to fraction form
    12,021.20/18,019.65 = 5,452.10/x
  3. Step 3: Cross multiply
    12,021.20x = 18,019.65 × 5,452.10
  4. Step 4: Simplify right side
    12,021.20x = 98,244,933.77
  5. Step 5: Solve for x
    x = 98,244,933.77/12,021.20
  6. Step 6: Final answer
    x = 8,172.64

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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.