Home / 13,755.85-20,635.14-4,991.45

Finding the Fourth Proportional to 13,755.85, 20,635.14 and 4,991.45

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Solution

The fourth proportional to 13,755.85, 20,635.14 and 4,991.45 is: 7,487.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.85 : 20,635.14 = 4,991.45 : x
  2. Step 2: Convert to fraction form
    13,755.85/20,635.14 = 4,991.45/x
  3. Step 3: Cross multiply
    13,755.85x = 20,635.14 × 4,991.45
  4. Step 4: Simplify right side
    13,755.85x = 102,999,157.02
  5. Step 5: Solve for x
    x = 102,999,157.02/13,755.85
  6. Step 6: Final answer
    x = 7,487.66

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1.5x scale

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.