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Finding the Fourth Proportional to 13,759.77, 18,987.41 and 8,094.74

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Solution

The fourth proportional to 13,759.77, 18,987.41 and 8,094.74 is: 11,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.77 : 18,987.41 = 8,094.74 : x
  2. Step 2: Convert to fraction form
    13,759.77/18,987.41 = 8,094.74/x
  3. Step 3: Cross multiply
    13,759.77x = 18,987.41 × 8,094.74
  4. Step 4: Simplify right side
    13,759.77x = 153,698,072.52
  5. Step 5: Solve for x
    x = 153,698,072.52/13,759.77
  6. Step 6: Final answer
    x = 11,170.10

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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.