Home / 20,971.23-28,941.49-12,020.22

Finding the Fourth Proportional to 20,971.23, 28,941.49 and 12,020.22

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Solution

The fourth proportional to 20,971.23, 28,941.49 and 12,020.22 is: 16,588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.23 : 28,941.49 = 12,020.22 : x
  2. Step 2: Convert to fraction form
    20,971.23/28,941.49 = 12,020.22/x
  3. Step 3: Cross multiply
    20,971.23x = 28,941.49 × 12,020.22
  4. Step 4: Simplify right side
    20,971.23x = 347,883,179.33
  5. Step 5: Solve for x
    x = 347,883,179.33/20,971.23
  6. Step 6: Final answer
    x = 16,588.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.