Home / 18,668.75-28,002.40-4,628.81

Finding the Fourth Proportional to 18,668.75, 28,002.40 and 4,628.81

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Solution

The fourth proportional to 18,668.75, 28,002.40 and 4,628.81 is: 6,943.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.75 : 28,002.40 = 4,628.81 : x
  2. Step 2: Convert to fraction form
    18,668.75/28,002.40 = 4,628.81/x
  3. Step 3: Cross multiply
    18,668.75x = 28,002.40 × 4,628.81
  4. Step 4: Simplify right side
    18,668.75x = 129,617,789.14
  5. Step 5: Solve for x
    x = 129,617,789.14/18,668.75
  6. Step 6: Final answer
    x = 6,943.04

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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.