Home / 11,289.85-16,928.55-3,888.20

Finding the Fourth Proportional to 11,289.85, 16,928.55 and 3,888.20

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Solution

The fourth proportional to 11,289.85, 16,928.55 and 3,888.20 is: 5,830.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.85 : 16,928.55 = 3,888.20 : x
  2. Step 2: Convert to fraction form
    11,289.85/16,928.55 = 3,888.20/x
  3. Step 3: Cross multiply
    11,289.85x = 16,928.55 × 3,888.20
  4. Step 4: Simplify right side
    11,289.85x = 65,821,630.43
  5. Step 5: Solve for x
    x = 65,821,630.43/11,289.85
  6. Step 6: Final answer
    x = 5,830.16

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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.