Home / 13,419.19-18,519.09-7,450.95

Finding the Fourth Proportional to 13,419.19, 18,519.09 and 7,450.95

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Solution

The fourth proportional to 13,419.19, 18,519.09 and 7,450.95 is: 10,282.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.19 : 18,519.09 = 7,450.95 : x
  2. Step 2: Convert to fraction form
    13,419.19/18,519.09 = 7,450.95/x
  3. Step 3: Cross multiply
    13,419.19x = 18,519.09 × 7,450.95
  4. Step 4: Simplify right side
    13,419.19x = 137,984,813.64
  5. Step 5: Solve for x
    x = 137,984,813.64/13,419.19
  6. Step 6: Final answer
    x = 10,282.65

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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.