Home / 18,651.12-25,738.56-10,153.20

Finding the Fourth Proportional to 18,651.12, 25,738.56 and 10,153.20

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Solution

The fourth proportional to 18,651.12, 25,738.56 and 10,153.20 is: 14,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.12 : 25,738.56 = 10,153.20 : x
  2. Step 2: Convert to fraction form
    18,651.12/25,738.56 = 10,153.20/x
  3. Step 3: Cross multiply
    18,651.12x = 25,738.56 × 10,153.20
  4. Step 4: Simplify right side
    18,651.12x = 261,328,747.39
  5. Step 5: Solve for x
    x = 261,328,747.39/18,651.12
  6. Step 6: Final answer
    x = 14,011.42

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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.