Home / 21,139.44-29,171.10-11,708.16

Finding the Fourth Proportional to 21,139.44, 29,171.10 and 11,708.16

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Solution

The fourth proportional to 21,139.44, 29,171.10 and 11,708.16 is: 16,156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139.44 : 29,171.10 = 11,708.16 : x
  2. Step 2: Convert to fraction form
    21,139.44/29,171.10 = 11,708.16/x
  3. Step 3: Cross multiply
    21,139.44x = 29,171.10 × 11,708.16
  4. Step 4: Simplify right side
    21,139.44x = 341,539,906.18
  5. Step 5: Solve for x
    x = 341,539,906.18/21,139.44
  6. Step 6: Final answer
    x = 16,156.53

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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.