Home / 17,845.45-26,742.58-13,128.65

Finding the Fourth Proportional to 17,845.45, 26,742.58 and 13,128.65

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Solution

The fourth proportional to 17,845.45, 26,742.58 and 13,128.65 is: 19,674.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,845.45 : 26,742.58 = 13,128.65 : x
  2. Step 2: Convert to fraction form
    17,845.45/26,742.58 = 13,128.65/x
  3. Step 3: Cross multiply
    17,845.45x = 26,742.58 × 13,128.65
  4. Step 4: Simplify right side
    17,845.45x = 351,093,907.27
  5. Step 5: Solve for x
    x = 351,093,907.27/17,845.45
  6. Step 6: Final answer
    x = 19,674.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.