Home / 13,756.10-18,983.49-8,091.09

Finding the Fourth Proportional to 13,756.10, 18,983.49 and 8,091.09

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Solution

The fourth proportional to 13,756.10, 18,983.49 and 8,091.09 is: 11,165.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.10 : 18,983.49 = 8,091.09 : x
  2. Step 2: Convert to fraction form
    13,756.10/18,983.49 = 8,091.09/x
  3. Step 3: Cross multiply
    13,756.10x = 18,983.49 × 8,091.09
  4. Step 4: Simplify right side
    13,756.10x = 153,597,126.10
  5. Step 5: Solve for x
    x = 153,597,126.10/13,756.10
  6. Step 6: Final answer
    x = 11,165.75

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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.