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Finding the Fourth Proportional to 19,491.63, 29,250.40 and 7,179.63

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Solution

The fourth proportional to 19,491.63, 29,250.40 and 7,179.63 is: 10,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.63 : 29,250.40 = 7,179.63 : x
  2. Step 2: Convert to fraction form
    19,491.63/29,250.40 = 7,179.63/x
  3. Step 3: Cross multiply
    19,491.63x = 29,250.40 × 7,179.63
  4. Step 4: Simplify right side
    19,491.63x = 210,007,049.35
  5. Step 5: Solve for x
    x = 210,007,049.35/19,491.63
  6. Step 6: Final answer
    x = 10,774.22

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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.