Home / 13,786.48-20,669.63-4,421.16

Finding the Fourth Proportional to 13,786.48, 20,669.63 and 4,421.16

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Solution

The fourth proportional to 13,786.48, 20,669.63 and 4,421.16 is: 6,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.48 : 20,669.63 = 4,421.16 : x
  2. Step 2: Convert to fraction form
    13,786.48/20,669.63 = 4,421.16/x
  3. Step 3: Cross multiply
    13,786.48x = 20,669.63 × 4,421.16
  4. Step 4: Simplify right side
    13,786.48x = 91,383,806.41
  5. Step 5: Solve for x
    x = 91,383,806.41/13,786.48
  6. Step 6: Final answer
    x = 6,628.51

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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.