Home / 20,668.72-28,525.07-11,715.27

Finding the Fourth Proportional to 20,668.72, 28,525.07 and 11,715.27

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Solution

The fourth proportional to 20,668.72, 28,525.07 and 11,715.27 is: 16,168.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.72 : 28,525.07 = 11,715.27 : x
  2. Step 2: Convert to fraction form
    20,668.72/28,525.07 = 11,715.27/x
  3. Step 3: Cross multiply
    20,668.72x = 28,525.07 × 11,715.27
  4. Step 4: Simplify right side
    20,668.72x = 334,178,896.82
  5. Step 5: Solve for x
    x = 334,178,896.82/20,668.72
  6. Step 6: Final answer
    x = 16,168.34

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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.