Home / 21,020.00-29,007.80-11,588.90

Finding the Fourth Proportional to 21,020.00, 29,007.80 and 11,588.90

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Solution

The fourth proportional to 21,020.00, 29,007.80 and 11,588.90 is: 15,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.00 : 29,007.80 = 11,588.90 : x
  2. Step 2: Convert to fraction form
    21,020.00/29,007.80 = 11,588.90/x
  3. Step 3: Cross multiply
    21,020.00x = 29,007.80 × 11,588.90
  4. Step 4: Simplify right side
    21,020.00x = 336,168,290.44
  5. Step 5: Solve for x
    x = 336,168,290.44/21,020.00
  6. Step 6: Final answer
    x = 15,992.79

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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.