Home / 18,941.85-28,405.55-6,289.25

Finding the Fourth Proportional to 18,941.85, 28,405.55 and 6,289.25

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Solution

The fourth proportional to 18,941.85, 28,405.55 and 6,289.25 is: 9,431.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.85 : 28,405.55 = 6,289.25 : x
  2. Step 2: Convert to fraction form
    18,941.85/28,405.55 = 6,289.25/x
  3. Step 3: Cross multiply
    18,941.85x = 28,405.55 × 6,289.25
  4. Step 4: Simplify right side
    18,941.85x = 178,649,479.03
  5. Step 5: Solve for x
    x = 178,649,479.03/18,941.85
  6. Step 6: Final answer
    x = 9,431.47

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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.