Home / 21,018.93-29,006.35-11,587.83

Finding the Fourth Proportional to 21,018.93, 29,006.35 and 11,587.83

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Solution

The fourth proportional to 21,018.93, 29,006.35 and 11,587.83 is: 15,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.93 : 29,006.35 = 11,587.83 : x
  2. Step 2: Convert to fraction form
    21,018.93/29,006.35 = 11,587.83/x
  3. Step 3: Cross multiply
    21,018.93x = 29,006.35 × 11,587.83
  4. Step 4: Simplify right side
    21,018.93x = 336,120,739.72
  5. Step 5: Solve for x
    x = 336,120,739.72/21,018.93
  6. Step 6: Final answer
    x = 15,991.33

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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.