Home / 13,910.76-20,855.18-6,885.86

Finding the Fourth Proportional to 13,910.76, 20,855.18 and 6,885.86

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Solution

The fourth proportional to 13,910.76, 20,855.18 and 6,885.86 is: 10,323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.76 : 20,855.18 = 6,885.86 : x
  2. Step 2: Convert to fraction form
    13,910.76/20,855.18 = 6,885.86/x
  3. Step 3: Cross multiply
    13,910.76x = 20,855.18 × 6,885.86
  4. Step 4: Simplify right side
    13,910.76x = 143,605,849.75
  5. Step 5: Solve for x
    x = 143,605,849.75/13,910.76
  6. Step 6: Final answer
    x = 10,323.36

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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.