Home / 20,774.24-28,668.84-11,343.16

Finding the Fourth Proportional to 20,774.24, 28,668.84 and 11,343.16

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Solution

The fourth proportional to 20,774.24, 28,668.84 and 11,343.16 is: 15,653.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.24 : 28,668.84 = 11,343.16 : x
  2. Step 2: Convert to fraction form
    20,774.24/28,668.84 = 11,343.16/x
  3. Step 3: Cross multiply
    20,774.24x = 28,668.84 × 11,343.16
  4. Step 4: Simplify right side
    20,774.24x = 325,195,239.13
  5. Step 5: Solve for x
    x = 325,195,239.13/20,774.24
  6. Step 6: Final answer
    x = 15,653.77

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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.