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Finding the Fourth Proportional to 28,519.79, 42,784.55 and 8,794.67

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Solution

The fourth proportional to 28,519.79, 42,784.55 and 8,794.67 is: 13,193.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.79 : 42,784.55 = 8,794.67 : x
  2. Step 2: Convert to fraction form
    28,519.79/42,784.55 = 8,794.67/x
  3. Step 3: Cross multiply
    28,519.79x = 42,784.55 × 8,794.67
  4. Step 4: Simplify right side
    28,519.79x = 376,275,998.35
  5. Step 5: Solve for x
    x = 376,275,998.35/28,519.79
  6. Step 6: Final answer
    x = 13,193.51

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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.