Home / 21,148.66-29,185.14-11,588.56

Finding the Fourth Proportional to 21,148.66, 29,185.14 and 11,588.56

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Solution

The fourth proportional to 21,148.66, 29,185.14 and 11,588.56 is: 15,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.66 : 29,185.14 = 11,588.56 : x
  2. Step 2: Convert to fraction form
    21,148.66/29,185.14 = 11,588.56/x
  3. Step 3: Cross multiply
    21,148.66x = 29,185.14 × 11,588.56
  4. Step 4: Simplify right side
    21,148.66x = 338,213,746.00
  5. Step 5: Solve for x
    x = 338,213,746.00/21,148.66
  6. Step 6: Final answer
    x = 15,992.21

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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.