Home / 23,139.96-31,928.22-13,711.56

Finding the Fourth Proportional to 23,139.96, 31,928.22 and 13,711.56

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Solution

The fourth proportional to 23,139.96, 31,928.22 and 13,711.56 is: 18,919.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,139.96 : 31,928.22 = 13,711.56 : x
  2. Step 2: Convert to fraction form
    23,139.96/31,928.22 = 13,711.56/x
  3. Step 3: Cross multiply
    23,139.96x = 31,928.22 × 13,711.56
  4. Step 4: Simplify right side
    23,139.96x = 437,785,704.22
  5. Step 5: Solve for x
    x = 437,785,704.22/23,139.96
  6. Step 6: Final answer
    x = 18,919.03

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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.