Home / 13,419.22-18,516.55-7,450.94

Finding the Fourth Proportional to 13,419.22, 18,516.55 and 7,450.94

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Solution

The fourth proportional to 13,419.22, 18,516.55 and 7,450.94 is: 10,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.22 : 18,516.55 = 7,450.94 : x
  2. Step 2: Convert to fraction form
    13,419.22/18,516.55 = 7,450.94/x
  3. Step 3: Cross multiply
    13,419.22x = 18,516.55 × 7,450.94
  4. Step 4: Simplify right side
    13,419.22x = 137,965,703.06
  5. Step 5: Solve for x
    x = 137,965,703.06/13,419.22
  6. Step 6: Final answer
    x = 10,281.20

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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.