Home / 28,436.44-39,253.12-21,383.36

Finding the Fourth Proportional to 28,436.44, 39,253.12 and 21,383.36

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Solution

The fourth proportional to 28,436.44, 39,253.12 and 21,383.36 is: 29,517.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.44 : 39,253.12 = 21,383.36 : x
  2. Step 2: Convert to fraction form
    28,436.44/39,253.12 = 21,383.36/x
  3. Step 3: Cross multiply
    28,436.44x = 39,253.12 × 21,383.36
  4. Step 4: Simplify right side
    28,436.44x = 839,363,596.08
  5. Step 5: Solve for x
    x = 839,363,596.08/28,436.44
  6. Step 6: Final answer
    x = 29,517.18

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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.