Home / 18,770.08-28,173.12-13,825.60

Finding the Fourth Proportional to 18,770.08, 28,173.12 and 13,825.60

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Solution

The fourth proportional to 18,770.08, 28,173.12 and 13,825.60 is: 20,751.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.08 : 28,173.12 = 13,825.60 : x
  2. Step 2: Convert to fraction form
    18,770.08/28,173.12 = 13,825.60/x
  3. Step 3: Cross multiply
    18,770.08x = 28,173.12 × 13,825.60
  4. Step 4: Simplify right side
    18,770.08x = 389,510,287.87
  5. Step 5: Solve for x
    x = 389,510,287.87/18,770.08
  6. Step 6: Final answer
    x = 20,751.66

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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.