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Finding the Fourth Proportional to 19,199.99, 28,780.22 and 7,350.98

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Solution

The fourth proportional to 19,199.99, 28,780.22 and 7,350.98 is: 11,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,199.99 : 28,780.22 = 7,350.98 : x
  2. Step 2: Convert to fraction form
    19,199.99/28,780.22 = 7,350.98/x
  3. Step 3: Cross multiply
    19,199.99x = 28,780.22 × 7,350.98
  4. Step 4: Simplify right side
    19,199.99x = 211,562,640.96
  5. Step 5: Solve for x
    x = 211,562,640.96/19,199.99
  6. Step 6: Final answer
    x = 11,018.89

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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.