Home / 13,755.54-20,620.68-4,988.34

Finding the Fourth Proportional to 13,755.54, 20,620.68 and 4,988.34

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Solution

The fourth proportional to 13,755.54, 20,620.68 and 4,988.34 is: 7,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.54 : 20,620.68 = 4,988.34 : x
  2. Step 2: Convert to fraction form
    13,755.54/20,620.68 = 4,988.34/x
  3. Step 3: Cross multiply
    13,755.54x = 20,620.68 × 4,988.34
  4. Step 4: Simplify right side
    13,755.54x = 102,862,962.87
  5. Step 5: Solve for x
    x = 102,862,962.87/13,755.54
  6. Step 6: Final answer
    x = 7,477.93

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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.