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Finding the Fourth Proportional to 28,384.48, 42,576.72 and 7,608.52

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Solution

The fourth proportional to 28,384.48, 42,576.72 and 7,608.52 is: 11,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.48 : 42,576.72 = 7,608.52 : x
  2. Step 2: Convert to fraction form
    28,384.48/42,576.72 = 7,608.52/x
  3. Step 3: Cross multiply
    28,384.48x = 42,576.72 × 7,608.52
  4. Step 4: Simplify right side
    28,384.48x = 323,945,825.65
  5. Step 5: Solve for x
    x = 323,945,825.65/28,384.48
  6. Step 6: Final answer
    x = 11,412.78

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1.5x scale

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.