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Finding the Fourth Proportional to 17,611.74, 26,384.94 and 12,603.78

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Solution

The fourth proportional to 17,611.74, 26,384.94 and 12,603.78 is: 18,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.74 : 26,384.94 = 12,603.78 : x
  2. Step 2: Convert to fraction form
    17,611.74/26,384.94 = 12,603.78/x
  3. Step 3: Cross multiply
    17,611.74x = 26,384.94 × 12,603.78
  4. Step 4: Simplify right side
    17,611.74x = 332,549,979.07
  5. Step 5: Solve for x
    x = 332,549,979.07/17,611.74
  6. Step 6: Final answer
    x = 18,882.29

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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.