Home / 20,694.33-28,538.33-13,903.70

Finding the Fourth Proportional to 20,694.33, 28,538.33 and 13,903.70

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Solution

The fourth proportional to 20,694.33, 28,538.33 and 13,903.70 is: 19,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.33 : 28,538.33 = 13,903.70 : x
  2. Step 2: Convert to fraction form
    20,694.33/28,538.33 = 13,903.70/x
  3. Step 3: Cross multiply
    20,694.33x = 28,538.33 × 13,903.70
  4. Step 4: Simplify right side
    20,694.33x = 396,788,166.61
  5. Step 5: Solve for x
    x = 396,788,166.61/20,694.33
  6. Step 6: Final answer
    x = 19,173.76

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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.