Home / 21,112.05-31,668.06-10,012.69

Finding the Fourth Proportional to 21,112.05, 31,668.06 and 10,012.69

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Solution

The fourth proportional to 21,112.05, 31,668.06 and 10,012.69 is: 15,019.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.05 : 31,668.06 = 10,012.69 : x
  2. Step 2: Convert to fraction form
    21,112.05/31,668.06 = 10,012.69/x
  3. Step 3: Cross multiply
    21,112.05x = 31,668.06 × 10,012.69
  4. Step 4: Simplify right side
    21,112.05x = 317,082,467.68
  5. Step 5: Solve for x
    x = 317,082,467.68/21,112.05
  6. Step 6: Final answer
    x = 15,019.03

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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.