Home / 13,755.49-20,636.28-4,991.10

Finding the Fourth Proportional to 13,755.49, 20,636.28 and 4,991.10

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Solution

The fourth proportional to 13,755.49, 20,636.28 and 4,991.10 is: 7,487.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.49 : 20,636.28 = 4,991.10 : x
  2. Step 2: Convert to fraction form
    13,755.49/20,636.28 = 4,991.10/x
  3. Step 3: Cross multiply
    13,755.49x = 20,636.28 × 4,991.10
  4. Step 4: Simplify right side
    13,755.49x = 102,997,737.11
  5. Step 5: Solve for x
    x = 102,997,737.11/13,755.49
  6. Step 6: Final answer
    x = 7,487.75

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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.