Home / 13,868.16-20,810.46-5,109.22

Finding the Fourth Proportional to 13,868.16, 20,810.46 and 5,109.22

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Solution

The fourth proportional to 13,868.16, 20,810.46 and 5,109.22 is: 7,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.16 : 20,810.46 = 5,109.22 : x
  2. Step 2: Convert to fraction form
    13,868.16/20,810.46 = 5,109.22/x
  3. Step 3: Cross multiply
    13,868.16x = 20,810.46 × 5,109.22
  4. Step 4: Simplify right side
    13,868.16x = 106,325,218.44
  5. Step 5: Solve for x
    x = 106,325,218.44/13,868.16
  6. Step 6: Final answer
    x = 7,666.86

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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.