Home / 20,715.26-28,588.67-11,765.57

Finding the Fourth Proportional to 20,715.26, 28,588.67 and 11,765.57

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Solution

The fourth proportional to 20,715.26, 28,588.67 and 11,765.57 is: 16,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.26 : 28,588.67 = 11,765.57 : x
  2. Step 2: Convert to fraction form
    20,715.26/28,588.67 = 11,765.57/x
  3. Step 3: Cross multiply
    20,715.26x = 28,588.67 × 11,765.57
  4. Step 4: Simplify right side
    20,715.26x = 336,361,796.32
  5. Step 5: Solve for x
    x = 336,361,796.32/20,715.26
  6. Step 6: Final answer
    x = 16,237.40

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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.