Home / 13,995.32-20,986.70-4,131.14

Finding the Fourth Proportional to 13,995.32, 20,986.70 and 4,131.14

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Solution

The fourth proportional to 13,995.32, 20,986.70 and 4,131.14 is: 6,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.32 : 20,986.70 = 4,131.14 : x
  2. Step 2: Convert to fraction form
    13,995.32/20,986.70 = 4,131.14/x
  3. Step 3: Cross multiply
    13,995.32x = 20,986.70 × 4,131.14
  4. Step 4: Simplify right side
    13,995.32x = 86,698,870.25
  5. Step 5: Solve for x
    x = 86,698,870.25/13,995.32
  6. Step 6: Final answer
    x = 6,194.85

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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.