Home / 28,003.50-42,005.22-19,211.76

Finding the Fourth Proportional to 28,003.50, 42,005.22 and 19,211.76

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Solution

The fourth proportional to 28,003.50, 42,005.22 and 19,211.76 is: 28,817.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.50 : 42,005.22 = 19,211.76 : x
  2. Step 2: Convert to fraction form
    28,003.50/42,005.22 = 19,211.76/x
  3. Step 3: Cross multiply
    28,003.50x = 42,005.22 × 19,211.76
  4. Step 4: Simplify right side
    28,003.50x = 806,994,205.39
  5. Step 5: Solve for x
    x = 806,994,205.39/28,003.50
  6. Step 6: Final answer
    x = 28,817.62

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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.