Home / 18,815.06-25,964.81-10,431.56

Finding the Fourth Proportional to 18,815.06, 25,964.81 and 10,431.56

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Solution

The fourth proportional to 18,815.06, 25,964.81 and 10,431.56 is: 14,395.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.06 : 25,964.81 = 10,431.56 : x
  2. Step 2: Convert to fraction form
    18,815.06/25,964.81 = 10,431.56/x
  3. Step 3: Cross multiply
    18,815.06x = 25,964.81 × 10,431.56
  4. Step 4: Simplify right side
    18,815.06x = 270,853,473.40
  5. Step 5: Solve for x
    x = 270,853,473.40/18,815.06
  6. Step 6: Final answer
    x = 14,395.57

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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.