Home / 15,668.40-21,614.94-9,379.56

Finding the Fourth Proportional to 15,668.40, 21,614.94 and 9,379.56

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Solution

The fourth proportional to 15,668.40, 21,614.94 and 9,379.56 is: 12,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,668.40 : 21,614.94 = 9,379.56 : x
  2. Step 2: Convert to fraction form
    15,668.40/21,614.94 = 9,379.56/x
  3. Step 3: Cross multiply
    15,668.40x = 21,614.94 × 9,379.56
  4. Step 4: Simplify right side
    15,668.40x = 202,738,626.63
  5. Step 5: Solve for x
    x = 202,738,626.63/15,668.40
  6. Step 6: Final answer
    x = 12,939.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.