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Finding the Fourth Proportional to 13,745.19, 18,980.97 and 13,008.63

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Solution

The fourth proportional to 13,745.19, 18,980.97 and 13,008.63 is: 17,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.19 : 18,980.97 = 13,008.63 : x
  2. Step 2: Convert to fraction form
    13,745.19/18,980.97 = 13,008.63/x
  3. Step 3: Cross multiply
    13,745.19x = 18,980.97 × 13,008.63
  4. Step 4: Simplify right side
    13,745.19x = 246,916,415.77
  5. Step 5: Solve for x
    x = 246,916,415.77/13,745.19
  6. Step 6: Final answer
    x = 17,963.84

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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.