Home / 21,171.40-29,215.38-11,741.32

Finding the Fourth Proportional to 21,171.40, 29,215.38 and 11,741.32

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Solution

The fourth proportional to 21,171.40, 29,215.38 and 11,741.32 is: 16,202.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.40 : 29,215.38 = 11,741.32 : x
  2. Step 2: Convert to fraction form
    21,171.40/29,215.38 = 11,741.32/x
  3. Step 3: Cross multiply
    21,171.40x = 29,215.38 × 11,741.32
  4. Step 4: Simplify right side
    21,171.40x = 343,027,125.50
  5. Step 5: Solve for x
    x = 343,027,125.50/21,171.40
  6. Step 6: Final answer
    x = 16,202.38

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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.