Home / 18,790.25-25,931.36-10,406.75

Finding the Fourth Proportional to 18,790.25, 25,931.36 and 10,406.75

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Solution

The fourth proportional to 18,790.25, 25,931.36 and 10,406.75 is: 14,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.25 : 25,931.36 = 10,406.75 : x
  2. Step 2: Convert to fraction form
    18,790.25/25,931.36 = 10,406.75/x
  3. Step 3: Cross multiply
    18,790.25x = 25,931.36 × 10,406.75
  4. Step 4: Simplify right side
    18,790.25x = 269,861,128.65
  5. Step 5: Solve for x
    x = 269,861,128.65/18,790.25
  6. Step 6: Final answer
    x = 14,361.76

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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.