Home / 19,429.65-29,131.92-10,662.21

Finding the Fourth Proportional to 19,429.65, 29,131.92 and 10,662.21

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Solution

The fourth proportional to 19,429.65, 29,131.92 and 10,662.21 is: 15,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.65 : 29,131.92 = 10,662.21 : x
  2. Step 2: Convert to fraction form
    19,429.65/29,131.92 = 10,662.21/x
  3. Step 3: Cross multiply
    19,429.65x = 29,131.92 × 10,662.21
  4. Step 4: Simplify right side
    19,429.65x = 310,610,648.74
  5. Step 5: Solve for x
    x = 310,610,648.74/19,429.65
  6. Step 6: Final answer
    x = 15,986.43

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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.