Home / 18,968.85-28,462.86-9,116.42

Finding the Fourth Proportional to 18,968.85, 28,462.86 and 9,116.42

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Solution

The fourth proportional to 18,968.85, 28,462.86 and 9,116.42 is: 13,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.85 : 28,462.86 = 9,116.42 : x
  2. Step 2: Convert to fraction form
    18,968.85/28,462.86 = 9,116.42/x
  3. Step 3: Cross multiply
    18,968.85x = 28,462.86 × 9,116.42
  4. Step 4: Simplify right side
    18,968.85x = 259,479,243.85
  5. Step 5: Solve for x
    x = 259,479,243.85/18,968.85
  6. Step 6: Final answer
    x = 13,679.23

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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.