Home / 18,763.20-25,890.72-10,378.56

Finding the Fourth Proportional to 18,763.20, 25,890.72 and 10,378.56

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Solution

The fourth proportional to 18,763.20, 25,890.72 and 10,378.56 is: 14,321.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.20 : 25,890.72 = 10,378.56 : x
  2. Step 2: Convert to fraction form
    18,763.20/25,890.72 = 10,378.56/x
  3. Step 3: Cross multiply
    18,763.20x = 25,890.72 × 10,378.56
  4. Step 4: Simplify right side
    18,763.20x = 268,708,390.96
  5. Step 5: Solve for x
    x = 268,708,390.96/18,763.20
  6. Step 6: Final answer
    x = 14,321.03

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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.