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Finding the Fourth Proportional to 18,639.94, 27,964.76 and 6,953.26

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Solution

The fourth proportional to 18,639.94, 27,964.76 and 6,953.26 is: 10,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.94 : 27,964.76 = 6,953.26 : x
  2. Step 2: Convert to fraction form
    18,639.94/27,964.76 = 6,953.26/x
  3. Step 3: Cross multiply
    18,639.94x = 27,964.76 × 6,953.26
  4. Step 4: Simplify right side
    18,639.94x = 194,446,247.12
  5. Step 5: Solve for x
    x = 194,446,247.12/18,639.94
  6. Step 6: Final answer
    x = 10,431.70

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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.