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Finding the Fourth Proportional to 13,755.88, 18,983.22 and 7,468.28

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Solution

The fourth proportional to 13,755.88, 18,983.22 and 7,468.28 is: 10,306.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.88 : 18,983.22 = 7,468.28 : x
  2. Step 2: Convert to fraction form
    13,755.88/18,983.22 = 7,468.28/x
  3. Step 3: Cross multiply
    13,755.88x = 18,983.22 × 7,468.28
  4. Step 4: Simplify right side
    13,755.88x = 141,772,002.26
  5. Step 5: Solve for x
    x = 141,772,002.26/13,755.88
  6. Step 6: Final answer
    x = 10,306.28

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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.