Home / 28,616.82-39,485.61-15,869.49

Finding the Fourth Proportional to 28,616.82, 39,485.61 and 15,869.49

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Solution

The fourth proportional to 28,616.82, 39,485.61 and 15,869.49 is: 21,896.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.82 : 39,485.61 = 15,869.49 : x
  2. Step 2: Convert to fraction form
    28,616.82/39,485.61 = 15,869.49/x
  3. Step 3: Cross multiply
    28,616.82x = 39,485.61 × 15,869.49
  4. Step 4: Simplify right side
    28,616.82x = 626,616,493.04
  5. Step 5: Solve for x
    x = 626,616,493.04/28,616.82
  6. Step 6: Final answer
    x = 21,896.79

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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.