Home / 28,054.65-38,729.31-21,994.23

Finding the Fourth Proportional to 28,054.65, 38,729.31 and 21,994.23

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Solution

The fourth proportional to 28,054.65, 38,729.31 and 21,994.23 is: 30,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.65 : 38,729.31 = 21,994.23 : x
  2. Step 2: Convert to fraction form
    28,054.65/38,729.31 = 21,994.23/x
  3. Step 3: Cross multiply
    28,054.65x = 38,729.31 × 21,994.23
  4. Step 4: Simplify right side
    28,054.65x = 851,821,351.88
  5. Step 5: Solve for x
    x = 851,821,351.88/28,054.65
  6. Step 6: Final answer
    x = 30,362.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.