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Finding the Fourth Proportional to 19,491.23, 29,239.92 and 8,401.05

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Solution

The fourth proportional to 19,491.23, 29,239.92 and 8,401.05 is: 12,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.23 : 29,239.92 = 8,401.05 : x
  2. Step 2: Convert to fraction form
    19,491.23/29,239.92 = 8,401.05/x
  3. Step 3: Cross multiply
    19,491.23x = 29,239.92 × 8,401.05
  4. Step 4: Simplify right side
    19,491.23x = 245,646,029.92
  5. Step 5: Solve for x
    x = 245,646,029.92/19,491.23
  6. Step 6: Final answer
    x = 12,602.90

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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.