Home / 12,015.90-18,021.08-3,580.69

Finding the Fourth Proportional to 12,015.90, 18,021.08 and 3,580.69

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Solution

The fourth proportional to 12,015.90, 18,021.08 and 3,580.69 is: 5,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.90 : 18,021.08 = 3,580.69 : x
  2. Step 2: Convert to fraction form
    12,015.90/18,021.08 = 3,580.69/x
  3. Step 3: Cross multiply
    12,015.90x = 18,021.08 × 3,580.69
  4. Step 4: Simplify right side
    12,015.90x = 64,527,792.94
  5. Step 5: Solve for x
    x = 64,527,792.94/12,015.90
  6. Step 6: Final answer
    x = 5,370.20

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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.