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Finding the Fourth Proportional to 30,651.99, 45,914.19 and 19,503.45

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Solution

The fourth proportional to 30,651.99, 45,914.19 and 19,503.45 is: 29,214.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,651.99 : 45,914.19 = 19,503.45 : x
  2. Step 2: Convert to fraction form
    30,651.99/45,914.19 = 19,503.45/x
  3. Step 3: Cross multiply
    30,651.99x = 45,914.19 × 19,503.45
  4. Step 4: Simplify right side
    30,651.99x = 895,485,108.96
  5. Step 5: Solve for x
    x = 895,485,108.96/30,651.99
  6. Step 6: Final answer
    x = 29,214.58

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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.