Home / 13,865.15-20,805.96-5,106.21

Finding the Fourth Proportional to 13,865.15, 20,805.96 and 5,106.21

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Solution

The fourth proportional to 13,865.15, 20,805.96 and 5,106.21 is: 7,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.15 : 20,805.96 = 5,106.21 : x
  2. Step 2: Convert to fraction form
    13,865.15/20,805.96 = 5,106.21/x
  3. Step 3: Cross multiply
    13,865.15x = 20,805.96 × 5,106.21
  4. Step 4: Simplify right side
    13,865.15x = 106,239,601.01
  5. Step 5: Solve for x
    x = 106,239,601.01/13,865.15
  6. Step 6: Final answer
    x = 7,662.35

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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.