Home / 21,135.67-29,167.37-11,704.39

Finding the Fourth Proportional to 21,135.67, 29,167.37 and 11,704.39

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Solution

The fourth proportional to 21,135.67, 29,167.37 and 11,704.39 is: 16,152.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.67 : 29,167.37 = 11,704.39 : x
  2. Step 2: Convert to fraction form
    21,135.67/29,167.37 = 11,704.39/x
  3. Step 3: Cross multiply
    21,135.67x = 29,167.37 × 11,704.39
  4. Step 4: Simplify right side
    21,135.67x = 341,386,273.75
  5. Step 5: Solve for x
    x = 341,386,273.75/21,135.67
  6. Step 6: Final answer
    x = 16,152.14

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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.