Home / 21,149.51-29,185.16-11,587.59

Finding the Fourth Proportional to 21,149.51, 29,185.16 and 11,587.59

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Solution

The fourth proportional to 21,149.51, 29,185.16 and 11,587.59 is: 15,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.51 : 29,185.16 = 11,587.59 : x
  2. Step 2: Convert to fraction form
    21,149.51/29,185.16 = 11,587.59/x
  3. Step 3: Cross multiply
    21,149.51x = 29,185.16 × 11,587.59
  4. Step 4: Simplify right side
    21,149.51x = 338,185,610.23
  5. Step 5: Solve for x
    x = 338,185,610.23/21,149.51
  6. Step 6: Final answer
    x = 15,990.24

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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.