Home / 28,196.89-38,910.03-15,620.73

Finding the Fourth Proportional to 28,196.89, 38,910.03 and 15,620.73

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Solution

The fourth proportional to 28,196.89, 38,910.03 and 15,620.73 is: 21,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.89 : 38,910.03 = 15,620.73 : x
  2. Step 2: Convert to fraction form
    28,196.89/38,910.03 = 15,620.73/x
  3. Step 3: Cross multiply
    28,196.89x = 38,910.03 × 15,620.73
  4. Step 4: Simplify right side
    28,196.89x = 607,802,994.82
  5. Step 5: Solve for x
    x = 607,802,994.82/28,196.89
  6. Step 6: Final answer
    x = 21,555.67

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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.