Home / 21,109.44-29,129.60-11,677.44

Finding the Fourth Proportional to 21,109.44, 29,129.60 and 11,677.44

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Solution

The fourth proportional to 21,109.44, 29,129.60 and 11,677.44 is: 16,114.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109.44 : 29,129.60 = 11,677.44 : x
  2. Step 2: Convert to fraction form
    21,109.44/29,129.60 = 11,677.44/x
  3. Step 3: Cross multiply
    21,109.44x = 29,129.60 × 11,677.44
  4. Step 4: Simplify right side
    21,109.44x = 340,159,156.22
  5. Step 5: Solve for x
    x = 340,159,156.22/21,109.44
  6. Step 6: Final answer
    x = 16,114.08

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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.