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Finding the Fourth Proportional to 28,990.17, 40,012.11 and 17,063.73

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Solution

The fourth proportional to 28,990.17, 40,012.11 and 17,063.73 is: 23,551.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.17 : 40,012.11 = 17,063.73 : x
  2. Step 2: Convert to fraction form
    28,990.17/40,012.11 = 17,063.73/x
  3. Step 3: Cross multiply
    28,990.17x = 40,012.11 × 17,063.73
  4. Step 4: Simplify right side
    28,990.17x = 682,755,841.77
  5. Step 5: Solve for x
    x = 682,755,841.77/28,990.17
  6. Step 6: Final answer
    x = 23,551.29

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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.