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Finding the Fourth Proportional to 28,119.36, 42,177.99 and 7,059.54

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Solution

The fourth proportional to 28,119.36, 42,177.99 and 7,059.54 is: 10,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.36 : 42,177.99 = 7,059.54 : x
  2. Step 2: Convert to fraction form
    28,119.36/42,177.99 = 7,059.54/x
  3. Step 3: Cross multiply
    28,119.36x = 42,177.99 × 7,059.54
  4. Step 4: Simplify right side
    28,119.36x = 297,757,207.52
  5. Step 5: Solve for x
    x = 297,757,207.52/28,119.36
  6. Step 6: Final answer
    x = 10,589.05

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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.