Home / 13,938.37-20,896.81-12,086.93

Finding the Fourth Proportional to 13,938.37, 20,896.81 and 12,086.93

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Solution

The fourth proportional to 13,938.37, 20,896.81 and 12,086.93 is: 18,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.37 : 20,896.81 = 12,086.93 : x
  2. Step 2: Convert to fraction form
    13,938.37/20,896.81 = 12,086.93/x
  3. Step 3: Cross multiply
    13,938.37x = 20,896.81 × 12,086.93
  4. Step 4: Simplify right side
    13,938.37x = 252,578,279.69
  5. Step 5: Solve for x
    x = 252,578,279.69/13,938.37
  6. Step 6: Final answer
    x = 18,121.08

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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.