Home / 21,151.67-29,188.08-11,589.68

Finding the Fourth Proportional to 21,151.67, 29,188.08 and 11,589.68

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Solution

The fourth proportional to 21,151.67, 29,188.08 and 11,589.68 is: 15,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.67 : 29,188.08 = 11,589.68 : x
  2. Step 2: Convert to fraction form
    21,151.67/29,188.08 = 11,589.68/x
  3. Step 3: Cross multiply
    21,151.67x = 29,188.08 × 11,589.68
  4. Step 4: Simplify right side
    21,151.67x = 338,280,579.98
  5. Step 5: Solve for x
    x = 338,280,579.98/21,151.67
  6. Step 6: Final answer
    x = 15,993.09

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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.