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Finding the Fourth Proportional to 19,817.63, 29,705.48 and 7,329.63

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Solution

The fourth proportional to 19,817.63, 29,705.48 and 7,329.63 is: 10,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,817.63 : 29,705.48 = 7,329.63 : x
  2. Step 2: Convert to fraction form
    19,817.63/29,705.48 = 7,329.63/x
  3. Step 3: Cross multiply
    19,817.63x = 29,705.48 × 7,329.63
  4. Step 4: Simplify right side
    19,817.63x = 217,730,177.37
  5. Step 5: Solve for x
    x = 217,730,177.37/19,817.63
  6. Step 6: Final answer
    x = 10,986.69

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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.