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Finding the Fourth Proportional to 18,950.00, 28,407.78 and 11,908.69

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Solution

The fourth proportional to 18,950.00, 28,407.78 and 11,908.69 is: 17,852.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.00 : 28,407.78 = 11,908.69 : x
  2. Step 2: Convert to fraction form
    18,950.00/28,407.78 = 11,908.69/x
  3. Step 3: Cross multiply
    18,950.00x = 28,407.78 × 11,908.69
  4. Step 4: Simplify right side
    18,950.00x = 338,299,374.59
  5. Step 5: Solve for x
    x = 338,299,374.59/18,950.00
  6. Step 6: Final answer
    x = 17,852.21

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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.