Home / 21,021.18-29,009.43-11,590.08

Finding the Fourth Proportional to 21,021.18, 29,009.43 and 11,590.08

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Solution

The fourth proportional to 21,021.18, 29,009.43 and 11,590.08 is: 15,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.18 : 29,009.43 = 11,590.08 : x
  2. Step 2: Convert to fraction form
    21,021.18/29,009.43 = 11,590.08/x
  3. Step 3: Cross multiply
    21,021.18x = 29,009.43 × 11,590.08
  4. Step 4: Simplify right side
    21,021.18x = 336,221,614.45
  5. Step 5: Solve for x
    x = 336,221,614.45/21,021.18
  6. Step 6: Final answer
    x = 15,994.42

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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.