Home / 18,783.14-25,920.73-10,399.64

Finding the Fourth Proportional to 18,783.14, 25,920.73 and 10,399.64

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Solution

The fourth proportional to 18,783.14, 25,920.73 and 10,399.64 is: 14,351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.14 : 25,920.73 = 10,399.64 : x
  2. Step 2: Convert to fraction form
    18,783.14/25,920.73 = 10,399.64/x
  3. Step 3: Cross multiply
    18,783.14x = 25,920.73 × 10,399.64
  4. Step 4: Simplify right side
    18,783.14x = 269,566,318.99
  5. Step 5: Solve for x
    x = 269,566,318.99/18,783.14
  6. Step 6: Final answer
    x = 14,351.50

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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.