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Finding the Fourth Proportional to 22,453.94, 33,658.90 and 19,129.70

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Solution

The fourth proportional to 22,453.94, 33,658.90 and 19,129.70 is: 28,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,453.94 : 33,658.90 = 19,129.70 : x
  2. Step 2: Convert to fraction form
    22,453.94/33,658.90 = 19,129.70/x
  3. Step 3: Cross multiply
    22,453.94x = 33,658.90 × 19,129.70
  4. Step 4: Simplify right side
    22,453.94x = 643,884,443.21
  5. Step 5: Solve for x
    x = 643,884,443.21/22,453.94
  6. Step 6: Final answer
    x = 28,675.80

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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.