Home / 13,929.16-20,896.82-5,164.08

Finding the Fourth Proportional to 13,929.16, 20,896.82 and 5,164.08

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Solution

The fourth proportional to 13,929.16, 20,896.82 and 5,164.08 is: 7,747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.16 : 20,896.82 = 5,164.08 : x
  2. Step 2: Convert to fraction form
    13,929.16/20,896.82 = 5,164.08/x
  3. Step 3: Cross multiply
    13,929.16x = 20,896.82 × 5,164.08
  4. Step 4: Simplify right side
    13,929.16x = 107,912,750.88
  5. Step 5: Solve for x
    x = 107,912,750.88/13,929.16
  6. Step 6: Final answer
    x = 7,747.25

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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.