Home / 20,079.37-27,722.19-12,912.49

Finding the Fourth Proportional to 20,079.37, 27,722.19 and 12,912.49

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Solution

The fourth proportional to 20,079.37, 27,722.19 and 12,912.49 is: 17,827.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.37 : 27,722.19 = 12,912.49 : x
  2. Step 2: Convert to fraction form
    20,079.37/27,722.19 = 12,912.49/x
  3. Step 3: Cross multiply
    20,079.37x = 27,722.19 × 12,912.49
  4. Step 4: Simplify right side
    20,079.37x = 357,962,501.15
  5. Step 5: Solve for x
    x = 357,962,501.15/20,079.37
  6. Step 6: Final answer
    x = 17,827.38

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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.