Home / 20,483.26-28,270.95-11,986.30

Finding the Fourth Proportional to 20,483.26, 28,270.95 and 11,986.30

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Solution

The fourth proportional to 20,483.26, 28,270.95 and 11,986.30 is: 16,543.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.26 : 28,270.95 = 11,986.30 : x
  2. Step 2: Convert to fraction form
    20,483.26/28,270.95 = 11,986.30/x
  3. Step 3: Cross multiply
    20,483.26x = 28,270.95 × 11,986.30
  4. Step 4: Simplify right side
    20,483.26x = 338,864,087.99
  5. Step 5: Solve for x
    x = 338,864,087.99/20,483.26
  6. Step 6: Final answer
    x = 16,543.46

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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.