Home / 18,674.57-28,016.23-7,430.55

Finding the Fourth Proportional to 18,674.57, 28,016.23 and 7,430.55

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Solution

The fourth proportional to 18,674.57, 28,016.23 and 7,430.55 is: 11,147.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.57 : 28,016.23 = 7,430.55 : x
  2. Step 2: Convert to fraction form
    18,674.57/28,016.23 = 7,430.55/x
  3. Step 3: Cross multiply
    18,674.57x = 28,016.23 × 7,430.55
  4. Step 4: Simplify right side
    18,674.57x = 208,175,997.83
  5. Step 5: Solve for x
    x = 208,175,997.83/18,674.57
  6. Step 6: Final answer
    x = 11,147.57

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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.