Home / 21,160.14-29,199.03-11,727.90

Finding the Fourth Proportional to 21,160.14, 29,199.03 and 11,727.90

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Solution

The fourth proportional to 21,160.14, 29,199.03 and 11,727.90 is: 16,183.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.14 : 29,199.03 = 11,727.90 : x
  2. Step 2: Convert to fraction form
    21,160.14/29,199.03 = 11,727.90/x
  3. Step 3: Cross multiply
    21,160.14x = 29,199.03 × 11,727.90
  4. Step 4: Simplify right side
    21,160.14x = 342,443,303.94
  5. Step 5: Solve for x
    x = 342,443,303.94/21,160.14
  6. Step 6: Final answer
    x = 16,183.41

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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.