Home / 21,112.31-31,668.84-7,069.71

Finding the Fourth Proportional to 21,112.31, 31,668.84 and 7,069.71

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Solution

The fourth proportional to 21,112.31, 31,668.84 and 7,069.71 is: 10,604.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.31 : 31,668.84 = 7,069.71 : x
  2. Step 2: Convert to fraction form
    21,112.31/31,668.84 = 7,069.71/x
  3. Step 3: Cross multiply
    21,112.31x = 31,668.84 × 7,069.71
  4. Step 4: Simplify right side
    21,112.31x = 223,889,514.84
  5. Step 5: Solve for x
    x = 223,889,514.84/21,112.31
  6. Step 6: Final answer
    x = 10,604.69

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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.