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Finding the Fourth Proportional to 12,030.54, 18,048.54 and 5,458.61

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Solution

The fourth proportional to 12,030.54, 18,048.54 and 5,458.61 is: 8,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,030.54 : 18,048.54 = 5,458.61 : x
  2. Step 2: Convert to fraction form
    12,030.54/18,048.54 = 5,458.61/x
  3. Step 3: Cross multiply
    12,030.54x = 18,048.54 × 5,458.61
  4. Step 4: Simplify right side
    12,030.54x = 98,519,850.69
  5. Step 5: Solve for x
    x = 98,519,850.69/12,030.54
  6. Step 6: Final answer
    x = 8,189.15

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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.