Home / 21,112.11-31,668.56-7,069.52

Finding the Fourth Proportional to 21,112.11, 31,668.56 and 7,069.52

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Solution

The fourth proportional to 21,112.11, 31,668.56 and 7,069.52 is: 10,604.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.11 : 31,668.56 = 7,069.52 : x
  2. Step 2: Convert to fraction form
    21,112.11/31,668.56 = 7,069.52/x
  3. Step 3: Cross multiply
    21,112.11x = 31,668.56 × 7,069.52
  4. Step 4: Simplify right side
    21,112.11x = 223,881,518.29
  5. Step 5: Solve for x
    x = 223,881,518.29/21,112.11
  6. Step 6: Final answer
    x = 10,604.41

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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.