Home / 18,668.25-28,001.66-4,628.31

Finding the Fourth Proportional to 18,668.25, 28,001.66 and 4,628.31

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Solution

The fourth proportional to 18,668.25, 28,001.66 and 4,628.31 is: 6,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.25 : 28,001.66 = 4,628.31 : x
  2. Step 2: Convert to fraction form
    18,668.25/28,001.66 = 4,628.31/x
  3. Step 3: Cross multiply
    18,668.25x = 28,001.66 × 4,628.31
  4. Step 4: Simplify right side
    18,668.25x = 129,600,339.85
  5. Step 5: Solve for x
    x = 129,600,339.85/18,668.25
  6. Step 6: Final answer
    x = 6,942.29

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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.