Home / 15,891.12-21,928.73-9,922.43

Finding the Fourth Proportional to 15,891.12, 21,928.73 and 9,922.43

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Solution

The fourth proportional to 15,891.12, 21,928.73 and 9,922.43 is: 13,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.12 : 21,928.73 = 9,922.43 : x
  2. Step 2: Convert to fraction form
    15,891.12/21,928.73 = 9,922.43/x
  3. Step 3: Cross multiply
    15,891.12x = 21,928.73 × 9,922.43
  4. Step 4: Simplify right side
    15,891.12x = 217,586,293.62
  5. Step 5: Solve for x
    x = 217,586,293.62/15,891.12
  6. Step 6: Final answer
    x = 13,692.32

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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.