Home / 11,129.23-16,668.94-9,628.71

Finding the Fourth Proportional to 11,129.23, 16,668.94 and 9,628.71

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Solution

The fourth proportional to 11,129.23, 16,668.94 and 9,628.71 is: 14,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.23 : 16,668.94 = 9,628.71 : x
  2. Step 2: Convert to fraction form
    11,129.23/16,668.94 = 9,628.71/x
  3. Step 3: Cross multiply
    11,129.23x = 16,668.94 × 9,628.71
  4. Step 4: Simplify right side
    11,129.23x = 160,500,389.27
  5. Step 5: Solve for x
    x = 160,500,389.27/11,129.23
  6. Step 6: Final answer
    x = 14,421.52

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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.