Home / 21,054.97-31,574.41-7,012.31

Finding the Fourth Proportional to 21,054.97, 31,574.41 and 7,012.31

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Solution

The fourth proportional to 21,054.97, 31,574.41 and 7,012.31 is: 10,515.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.97 : 31,574.41 = 7,012.31 : x
  2. Step 2: Convert to fraction form
    21,054.97/31,574.41 = 7,012.31/x
  3. Step 3: Cross multiply
    21,054.97x = 31,574.41 × 7,012.31
  4. Step 4: Simplify right side
    21,054.97x = 221,409,375.58
  5. Step 5: Solve for x
    x = 221,409,375.58/21,054.97
  6. Step 6: Final answer
    x = 10,515.78

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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.