Home / 13,640.09-20,457.82-3,777.06

Finding the Fourth Proportional to 13,640.09, 20,457.82 and 3,777.06

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Solution

The fourth proportional to 13,640.09, 20,457.82 and 3,777.06 is: 5,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.09 : 20,457.82 = 3,777.06 : x
  2. Step 2: Convert to fraction form
    13,640.09/20,457.82 = 3,777.06/x
  3. Step 3: Cross multiply
    13,640.09x = 20,457.82 × 3,777.06
  4. Step 4: Simplify right side
    13,640.09x = 77,270,404.17
  5. Step 5: Solve for x
    x = 77,270,404.17/13,640.09
  6. Step 6: Final answer
    x = 5,664.95

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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.