Home / 13,786.59-20,669.80-4,421.27

Finding the Fourth Proportional to 13,786.59, 20,669.80 and 4,421.27

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Solution

The fourth proportional to 13,786.59, 20,669.80 and 4,421.27 is: 6,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.59 : 20,669.80 = 4,421.27 : x
  2. Step 2: Convert to fraction form
    13,786.59/20,669.80 = 4,421.27/x
  3. Step 3: Cross multiply
    13,786.59x = 20,669.80 × 4,421.27
  4. Step 4: Simplify right side
    13,786.59x = 91,386,807.27
  5. Step 5: Solve for x
    x = 91,386,807.27/13,786.59
  6. Step 6: Final answer
    x = 6,628.68

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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.