Home / 14,429.72-19,890.26-10,640.75

Finding the Fourth Proportional to 14,429.72, 19,890.26 and 10,640.75

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Solution

The fourth proportional to 14,429.72, 19,890.26 and 10,640.75 is: 14,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,429.72 : 19,890.26 = 10,640.75 : x
  2. Step 2: Convert to fraction form
    14,429.72/19,890.26 = 10,640.75/x
  3. Step 3: Cross multiply
    14,429.72x = 19,890.26 × 10,640.75
  4. Step 4: Simplify right side
    14,429.72x = 211,647,131.44
  5. Step 5: Solve for x
    x = 211,647,131.44/14,429.72
  6. Step 6: Final answer
    x = 14,667.45

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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.