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Finding the Fourth Proportional to 28,865.99, 43,300.19 and 9,144.11

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Solution

The fourth proportional to 28,865.99, 43,300.19 and 9,144.11 is: 13,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865.99 : 43,300.19 = 9,144.11 : x
  2. Step 2: Convert to fraction form
    28,865.99/43,300.19 = 9,144.11/x
  3. Step 3: Cross multiply
    28,865.99x = 43,300.19 × 9,144.11
  4. Step 4: Simplify right side
    28,865.99x = 395,941,506.74
  5. Step 5: Solve for x
    x = 395,941,506.74/28,865.99
  6. Step 6: Final answer
    x = 13,716.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.