Home / 18,988.48-28,485.96-5,840.56

Finding the Fourth Proportional to 18,988.48, 28,485.96 and 5,840.56

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Solution

The fourth proportional to 18,988.48, 28,485.96 and 5,840.56 is: 8,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.48 : 28,485.96 = 5,840.56 : x
  2. Step 2: Convert to fraction form
    18,988.48/28,485.96 = 5,840.56/x
  3. Step 3: Cross multiply
    18,988.48x = 28,485.96 × 5,840.56
  4. Step 4: Simplify right side
    18,988.48x = 166,373,958.54
  5. Step 5: Solve for x
    x = 166,373,958.54/18,988.48
  6. Step 6: Final answer
    x = 8,761.84

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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.