Home / 20,745.98-28,628.58-11,314.53

Finding the Fourth Proportional to 20,745.98, 28,628.58 and 11,314.53

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Solution

The fourth proportional to 20,745.98, 28,628.58 and 11,314.53 is: 15,613.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.98 : 28,628.58 = 11,314.53 : x
  2. Step 2: Convert to fraction form
    20,745.98/28,628.58 = 11,314.53/x
  3. Step 3: Cross multiply
    20,745.98x = 28,628.58 × 11,314.53
  4. Step 4: Simplify right side
    20,745.98x = 323,918,927.27
  5. Step 5: Solve for x
    x = 323,918,927.27/20,745.98
  6. Step 6: Final answer
    x = 15,613.58

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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.