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Finding the Fourth Proportional to 15,157.35, 20,914.67 and 8,441.44

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Solution

The fourth proportional to 15,157.35, 20,914.67 and 8,441.44 is: 11,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,157.35 : 20,914.67 = 8,441.44 : x
  2. Step 2: Convert to fraction form
    15,157.35/20,914.67 = 8,441.44/x
  3. Step 3: Cross multiply
    15,157.35x = 20,914.67 × 8,441.44
  4. Step 4: Simplify right side
    15,157.35x = 176,549,900.74
  5. Step 5: Solve for x
    x = 176,549,900.74/15,157.35
  6. Step 6: Final answer
    x = 11,647.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.