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Finding the Fourth Proportional to 15,074.39, 20,803.08 and 9,107.12

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Solution

The fourth proportional to 15,074.39, 20,803.08 and 9,107.12 is: 12,568.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.39 : 20,803.08 = 9,107.12 : x
  2. Step 2: Convert to fraction form
    15,074.39/20,803.08 = 9,107.12/x
  3. Step 3: Cross multiply
    15,074.39x = 20,803.08 × 9,107.12
  4. Step 4: Simplify right side
    15,074.39x = 189,456,145.93
  5. Step 5: Solve for x
    x = 189,456,145.93/15,074.39
  6. Step 6: Final answer
    x = 12,568.08

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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.