Home / 13,777.42-20,665.95-3,389.26

Finding the Fourth Proportional to 13,777.42, 20,665.95 and 3,389.26

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Solution

The fourth proportional to 13,777.42, 20,665.95 and 3,389.26 is: 5,083.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.42 : 20,665.95 = 3,389.26 : x
  2. Step 2: Convert to fraction form
    13,777.42/20,665.95 = 3,389.26/x
  3. Step 3: Cross multiply
    13,777.42x = 20,665.95 × 3,389.26
  4. Step 4: Simplify right side
    13,777.42x = 70,042,277.70
  5. Step 5: Solve for x
    x = 70,042,277.70/13,777.42
  6. Step 6: Final answer
    x = 5,083.85

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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.