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Finding the Fourth Proportional to 19,011.96, 28,505.79 and 7,926.30

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Solution

The fourth proportional to 19,011.96, 28,505.79 and 7,926.30 is: 11,884.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.96 : 28,505.79 = 7,926.30 : x
  2. Step 2: Convert to fraction form
    19,011.96/28,505.79 = 7,926.30/x
  3. Step 3: Cross multiply
    19,011.96x = 28,505.79 × 7,926.30
  4. Step 4: Simplify right side
    19,011.96x = 225,945,443.28
  5. Step 5: Solve for x
    x = 225,945,443.28/19,011.96
  6. Step 6: Final answer
    x = 11,884.38

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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.