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Finding the Fourth Proportional to 15,290.86, 22,942.78 and 8,357.26

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Solution

The fourth proportional to 15,290.86, 22,942.78 and 8,357.26 is: 12,539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.86 : 22,942.78 = 8,357.26 : x
  2. Step 2: Convert to fraction form
    15,290.86/22,942.78 = 8,357.26/x
  3. Step 3: Cross multiply
    15,290.86x = 22,942.78 × 8,357.26
  4. Step 4: Simplify right side
    15,290.86x = 191,738,777.58
  5. Step 5: Solve for x
    x = 191,738,777.58/15,290.86
  6. Step 6: Final answer
    x = 12,539.44

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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.