Home / 20,765.26-28,655.94-11,333.89

Finding the Fourth Proportional to 20,765.26, 28,655.94 and 11,333.89

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Solution

The fourth proportional to 20,765.26, 28,655.94 and 11,333.89 is: 15,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.26 : 28,655.94 = 11,333.89 : x
  2. Step 2: Convert to fraction form
    20,765.26/28,655.94 = 11,333.89/x
  3. Step 3: Cross multiply
    20,765.26x = 28,655.94 × 11,333.89
  4. Step 4: Simplify right side
    20,765.26x = 324,783,271.81
  5. Step 5: Solve for x
    x = 324,783,271.81/20,765.26
  6. Step 6: Final answer
    x = 15,640.70

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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.