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Finding the Fourth Proportional to 18,020.25, 27,030.36 and 10,020.12

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Solution

The fourth proportional to 18,020.25, 27,030.36 and 10,020.12 is: 15,030.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,020.25 : 27,030.36 = 10,020.12 : x
  2. Step 2: Convert to fraction form
    18,020.25/27,030.36 = 10,020.12/x
  3. Step 3: Cross multiply
    18,020.25x = 27,030.36 × 10,020.12
  4. Step 4: Simplify right side
    18,020.25x = 270,847,450.84
  5. Step 5: Solve for x
    x = 270,847,450.84/18,020.25
  6. Step 6: Final answer
    x = 15,030.17

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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.