Home / 11,645.53-17,378.82-10,399.93

Finding the Fourth Proportional to 11,645.53, 17,378.82 and 10,399.93

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Solution

The fourth proportional to 11,645.53, 17,378.82 and 10,399.93 is: 15,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,645.53 : 17,378.82 = 10,399.93 : x
  2. Step 2: Convert to fraction form
    11,645.53/17,378.82 = 10,399.93/x
  3. Step 3: Cross multiply
    11,645.53x = 17,378.82 × 10,399.93
  4. Step 4: Simplify right side
    11,645.53x = 180,738,511.48
  5. Step 5: Solve for x
    x = 180,738,511.48/11,645.53
  6. Step 6: Final answer
    x = 15,519.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.