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Finding the Fourth Proportional to 18,020.58, 27,030.87 and 8,159.64

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Solution

The fourth proportional to 18,020.58, 27,030.87 and 8,159.64 is: 12,239.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,020.58 : 27,030.87 = 8,159.64 : x
  2. Step 2: Convert to fraction form
    18,020.58/27,030.87 = 8,159.64/x
  3. Step 3: Cross multiply
    18,020.58x = 27,030.87 × 8,159.64
  4. Step 4: Simplify right side
    18,020.58x = 220,562,168.09
  5. Step 5: Solve for x
    x = 220,562,168.09/18,020.58
  6. Step 6: Final answer
    x = 12,239.46

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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.