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Finding the Fourth Proportional to 18,306, 25,243.41 and 15,662.16

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Solution

The fourth proportional to 18,306, 25,243.41 and 15,662.16 is: 21,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306 : 25,243.41 = 15,662.16 : x
  2. Step 2: Convert to fraction form
    18,306/25,243.41 = 15,662.16/x
  3. Step 3: Cross multiply
    18,306x = 25,243.41 × 15,662.16
  4. Step 4: Simplify right side
    18,306x = 395,366,326.37
  5. Step 5: Solve for x
    x = 395,366,326.37/18,306
  6. Step 6: Final answer
    x = 21,597.64

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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.