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Finding the Fourth Proportional to 28,392.39, 42,594.80 and 8,670.44

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Solution

The fourth proportional to 28,392.39, 42,594.80 and 8,670.44 is: 13,007.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.39 : 42,594.80 = 8,670.44 : x
  2. Step 2: Convert to fraction form
    28,392.39/42,594.80 = 8,670.44/x
  3. Step 3: Cross multiply
    28,392.39x = 42,594.80 × 8,670.44
  4. Step 4: Simplify right side
    28,392.39x = 369,315,720.85
  5. Step 5: Solve for x
    x = 369,315,720.85/28,392.39
  6. Step 6: Final answer
    x = 13,007.56

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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.