Home / 20,701.94-28,553.26-13,141.70

Finding the Fourth Proportional to 20,701.94, 28,553.26 and 13,141.70

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Solution

The fourth proportional to 20,701.94, 28,553.26 and 13,141.70 is: 18,125.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.94 : 28,553.26 = 13,141.70 : x
  2. Step 2: Convert to fraction form
    20,701.94/28,553.26 = 13,141.70/x
  3. Step 3: Cross multiply
    20,701.94x = 28,553.26 × 13,141.70
  4. Step 4: Simplify right side
    20,701.94x = 375,238,376.94
  5. Step 5: Solve for x
    x = 375,238,376.94/20,701.94
  6. Step 6: Final answer
    x = 18,125.76

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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.