Home / 22,770.80-31,436.08-15,735.04

Finding the Fourth Proportional to 22,770.80, 31,436.08 and 15,735.04

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Solution

The fourth proportional to 22,770.80, 31,436.08 and 15,735.04 is: 21,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,770.80 : 31,436.08 = 15,735.04 : x
  2. Step 2: Convert to fraction form
    22,770.80/31,436.08 = 15,735.04/x
  3. Step 3: Cross multiply
    22,770.80x = 31,436.08 × 15,735.04
  4. Step 4: Simplify right side
    22,770.80x = 494,647,976.24
  5. Step 5: Solve for x
    x = 494,647,976.24/22,770.80
  6. Step 6: Final answer
    x = 21,722.91

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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.