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Finding the Fourth Proportional to 13,953.29, 20,912.11 and 6,541.42

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Solution

The fourth proportional to 13,953.29, 20,912.11 and 6,541.42 is: 9,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.29 : 20,912.11 = 6,541.42 : x
  2. Step 2: Convert to fraction form
    13,953.29/20,912.11 = 6,541.42/x
  3. Step 3: Cross multiply
    13,953.29x = 20,912.11 × 6,541.42
  4. Step 4: Simplify right side
    13,953.29x = 136,794,894.60
  5. Step 5: Solve for x
    x = 136,794,894.60/13,953.29
  6. Step 6: Final answer
    x = 9,803.77

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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.