Home / 20,469.65-28,246.53-11,515.37

Finding the Fourth Proportional to 20,469.65, 28,246.53 and 11,515.37

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Solution

The fourth proportional to 20,469.65, 28,246.53 and 11,515.37 is: 15,890.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.65 : 28,246.53 = 11,515.37 : x
  2. Step 2: Convert to fraction form
    20,469.65/28,246.53 = 11,515.37/x
  3. Step 3: Cross multiply
    20,469.65x = 28,246.53 × 11,515.37
  4. Step 4: Simplify right side
    20,469.65x = 325,269,244.17
  5. Step 5: Solve for x
    x = 325,269,244.17/20,469.65
  6. Step 6: Final answer
    x = 15,890.32

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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.