Home / 20,895.06-31,370.38-12,136.26

Finding the Fourth Proportional to 20,895.06, 31,370.38 and 12,136.26

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Solution

The fourth proportional to 20,895.06, 31,370.38 and 12,136.26 is: 18,220.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.06 : 31,370.38 = 12,136.26 : x
  2. Step 2: Convert to fraction form
    20,895.06/31,370.38 = 12,136.26/x
  3. Step 3: Cross multiply
    20,895.06x = 31,370.38 × 12,136.26
  4. Step 4: Simplify right side
    20,895.06x = 380,719,087.98
  5. Step 5: Solve for x
    x = 380,719,087.98/20,895.06
  6. Step 6: Final answer
    x = 18,220.53

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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.