Home / 13,974.85-19,284.87-7,687.21

Finding the Fourth Proportional to 13,974.85, 19,284.87 and 7,687.21

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Solution

The fourth proportional to 13,974.85, 19,284.87 and 7,687.21 is: 10,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974.85 : 19,284.87 = 7,687.21 : x
  2. Step 2: Convert to fraction form
    13,974.85/19,284.87 = 7,687.21/x
  3. Step 3: Cross multiply
    13,974.85x = 19,284.87 × 7,687.21
  4. Step 4: Simplify right side
    13,974.85x = 148,246,845.51
  5. Step 5: Solve for x
    x = 148,246,845.51/13,974.85
  6. Step 6: Final answer
    x = 10,608.12

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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.