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Finding the Fourth Proportional to 15,074.48, 20,803.80 and 8,361.20

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Solution

The fourth proportional to 15,074.48, 20,803.80 and 8,361.20 is: 11,539.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.48 : 20,803.80 = 8,361.20 : x
  2. Step 2: Convert to fraction form
    15,074.48/20,803.80 = 8,361.20/x
  3. Step 3: Cross multiply
    15,074.48x = 20,803.80 × 8,361.20
  4. Step 4: Simplify right side
    15,074.48x = 173,944,732.56
  5. Step 5: Solve for x
    x = 173,944,732.56/15,074.48
  6. Step 6: Final answer
    x = 11,539.02

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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.