Home / 13,912.76-20,858.18-6,887.86

Finding the Fourth Proportional to 13,912.76, 20,858.18 and 6,887.86

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Solution

The fourth proportional to 13,912.76, 20,858.18 and 6,887.86 is: 10,326.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.76 : 20,858.18 = 6,887.86 : x
  2. Step 2: Convert to fraction form
    13,912.76/20,858.18 = 6,887.86/x
  3. Step 3: Cross multiply
    13,912.76x = 20,858.18 × 6,887.86
  4. Step 4: Simplify right side
    13,912.76x = 143,668,223.69
  5. Step 5: Solve for x
    x = 143,668,223.69/13,912.76
  6. Step 6: Final answer
    x = 10,326.36

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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.