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Finding the Fourth Proportional to 28,775.99, 43,160.54 and 7,717.70

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Solution

The fourth proportional to 28,775.99, 43,160.54 and 7,717.70 is: 11,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775.99 : 43,160.54 = 7,717.70 : x
  2. Step 2: Convert to fraction form
    28,775.99/43,160.54 = 7,717.70/x
  3. Step 3: Cross multiply
    28,775.99x = 43,160.54 × 7,717.70
  4. Step 4: Simplify right side
    28,775.99x = 333,099,845.17
  5. Step 5: Solve for x
    x = 333,099,845.17/28,775.99
  6. Step 6: Final answer
    x = 11,575.62

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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.