Home / 15,450.10-21,338.66-10,405.56

Finding the Fourth Proportional to 15,450.10, 21,338.66 and 10,405.56

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Solution

The fourth proportional to 15,450.10, 21,338.66 and 10,405.56 is: 14,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.10 : 21,338.66 = 10,405.56 : x
  2. Step 2: Convert to fraction form
    15,450.10/21,338.66 = 10,405.56/x
  3. Step 3: Cross multiply
    15,450.10x = 21,338.66 × 10,405.56
  4. Step 4: Simplify right side
    15,450.10x = 222,040,706.95
  5. Step 5: Solve for x
    x = 222,040,706.95/15,450.10
  6. Step 6: Final answer
    x = 14,371.47

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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.