Home / 15,825.66-21,789.42-13,935.96

Finding the Fourth Proportional to 15,825.66, 21,789.42 and 13,935.96

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Solution

The fourth proportional to 15,825.66, 21,789.42 and 13,935.96 is: 19,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.66 : 21,789.42 = 13,935.96 : x
  2. Step 2: Convert to fraction form
    15,825.66/21,789.42 = 13,935.96/x
  3. Step 3: Cross multiply
    15,825.66x = 21,789.42 × 13,935.96
  4. Step 4: Simplify right side
    15,825.66x = 303,656,485.54
  5. Step 5: Solve for x
    x = 303,656,485.54/15,825.66
  6. Step 6: Final answer
    x = 19,187.60

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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.