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Finding the Fourth Proportional to 18,878.84, 26,038.03 and 11,704.74

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Solution

The fourth proportional to 18,878.84, 26,038.03 and 11,704.74 is: 16,143.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.84 : 26,038.03 = 11,704.74 : x
  2. Step 2: Convert to fraction form
    18,878.84/26,038.03 = 11,704.74/x
  3. Step 3: Cross multiply
    18,878.84x = 26,038.03 × 11,704.74
  4. Step 4: Simplify right side
    18,878.84x = 304,768,371.26
  5. Step 5: Solve for x
    x = 304,768,371.26/18,878.84
  6. Step 6: Final answer
    x = 16,143.38

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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.