Home / 13,786.76-20,670.05-4,421.45

Finding the Fourth Proportional to 13,786.76, 20,670.05 and 4,421.45

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Solution

The fourth proportional to 13,786.76, 20,670.05 and 4,421.45 is: 6,628.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.76 : 20,670.05 = 4,421.45 : x
  2. Step 2: Convert to fraction form
    13,786.76/20,670.05 = 4,421.45/x
  3. Step 3: Cross multiply
    13,786.76x = 20,670.05 × 4,421.45
  4. Step 4: Simplify right side
    13,786.76x = 91,391,500.28
  5. Step 5: Solve for x
    x = 91,391,500.28/13,786.76
  6. Step 6: Final answer
    x = 6,628.93

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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.