Home / 18,782.96-28,174.37-4,743.05

Finding the Fourth Proportional to 18,782.96, 28,174.37 and 4,743.05

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Solution

The fourth proportional to 18,782.96, 28,174.37 and 4,743.05 is: 7,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.96 : 28,174.37 = 4,743.05 : x
  2. Step 2: Convert to fraction form
    18,782.96/28,174.37 = 4,743.05/x
  3. Step 3: Cross multiply
    18,782.96x = 28,174.37 × 4,743.05
  4. Step 4: Simplify right side
    18,782.96x = 133,632,281.04
  5. Step 5: Solve for x
    x = 133,632,281.04/18,782.96
  6. Step 6: Final answer
    x = 7,114.55

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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.