Home / 20,668.84-28,523.28-11,237.38

Finding the Fourth Proportional to 20,668.84, 28,523.28 and 11,237.38

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Solution

The fourth proportional to 20,668.84, 28,523.28 and 11,237.38 is: 15,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.84 : 28,523.28 = 11,237.38 : x
  2. Step 2: Convert to fraction form
    20,668.84/28,523.28 = 11,237.38/x
  3. Step 3: Cross multiply
    20,668.84x = 28,523.28 × 11,237.38
  4. Step 4: Simplify right side
    20,668.84x = 320,526,936.21
  5. Step 5: Solve for x
    x = 320,526,936.21/20,668.84
  6. Step 6: Final answer
    x = 15,507.74

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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.