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Finding the Fourth Proportional to 18,574.42, 25,639.84 and 12,608.76

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Solution

The fourth proportional to 18,574.42, 25,639.84 and 12,608.76 is: 17,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.42 : 25,639.84 = 12,608.76 : x
  2. Step 2: Convert to fraction form
    18,574.42/25,639.84 = 12,608.76/x
  3. Step 3: Cross multiply
    18,574.42x = 25,639.84 × 12,608.76
  4. Step 4: Simplify right side
    18,574.42x = 323,286,589.00
  5. Step 5: Solve for x
    x = 323,286,589.00/18,574.42
  6. Step 6: Final answer
    x = 17,404.94

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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.