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Finding the Fourth Proportional to 19,662.75, 29,495.14 and 18,666.25

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Solution

The fourth proportional to 19,662.75, 29,495.14 and 18,666.25 is: 28,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.75 : 29,495.14 = 18,666.25 : x
  2. Step 2: Convert to fraction form
    19,662.75/29,495.14 = 18,666.25/x
  3. Step 3: Cross multiply
    19,662.75x = 29,495.14 × 18,666.25
  4. Step 4: Simplify right side
    19,662.75x = 550,563,536.62
  5. Step 5: Solve for x
    x = 550,563,536.62/19,662.75
  6. Step 6: Final answer
    x = 28,000.33

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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.