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Finding the Fourth Proportional to 15,737.63, 21,717.11 and 8,662.67

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Solution

The fourth proportional to 15,737.63, 21,717.11 and 8,662.67 is: 11,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,737.63 : 21,717.11 = 8,662.67 : x
  2. Step 2: Convert to fraction form
    15,737.63/21,717.11 = 8,662.67/x
  3. Step 3: Cross multiply
    15,737.63x = 21,717.11 × 8,662.67
  4. Step 4: Simplify right side
    15,737.63x = 188,128,113.97
  5. Step 5: Solve for x
    x = 188,128,113.97/15,737.63
  6. Step 6: Final answer
    x = 11,954.03

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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.