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Finding the Fourth Proportional to 28,097.66, 42,149.02 and 7,321.34

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Solution

The fourth proportional to 28,097.66, 42,149.02 and 7,321.34 is: 10,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.66 : 42,149.02 = 7,321.34 : x
  2. Step 2: Convert to fraction form
    28,097.66/42,149.02 = 7,321.34/x
  3. Step 3: Cross multiply
    28,097.66x = 42,149.02 × 7,321.34
  4. Step 4: Simplify right side
    28,097.66x = 308,587,306.09
  5. Step 5: Solve for x
    x = 308,587,306.09/28,097.66
  6. Step 6: Final answer
    x = 10,982.67

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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.