Home / 21,403.30-29,537.13-11,971.30

Finding the Fourth Proportional to 21,403.30, 29,537.13 and 11,971.30

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Solution

The fourth proportional to 21,403.30, 29,537.13 and 11,971.30 is: 16,520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.30 : 29,537.13 = 11,971.30 : x
  2. Step 2: Convert to fraction form
    21,403.30/29,537.13 = 11,971.30/x
  3. Step 3: Cross multiply
    21,403.30x = 29,537.13 × 11,971.30
  4. Step 4: Simplify right side
    21,403.30x = 353,597,844.37
  5. Step 5: Solve for x
    x = 353,597,844.37/21,403.30
  6. Step 6: Final answer
    x = 16,520.72

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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.