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Finding the Fourth Proportional to 19,491.59, 29,240.45 and 8,401.43

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Solution

The fourth proportional to 19,491.59, 29,240.45 and 8,401.43 is: 12,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.59 : 29,240.45 = 8,401.43 : x
  2. Step 2: Convert to fraction form
    19,491.59/29,240.45 = 8,401.43/x
  3. Step 3: Cross multiply
    19,491.59x = 29,240.45 × 8,401.43
  4. Step 4: Simplify right side
    19,491.59x = 245,661,405.63
  5. Step 5: Solve for x
    x = 245,661,405.63/19,491.59
  6. Step 6: Final answer
    x = 12,603.46

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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.