Home / 21,021.51-29,009.88-11,590.41

Finding the Fourth Proportional to 21,021.51, 29,009.88 and 11,590.41

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Solution

The fourth proportional to 21,021.51, 29,009.88 and 11,590.41 is: 15,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.51 : 29,009.88 = 11,590.41 : x
  2. Step 2: Convert to fraction form
    21,021.51/29,009.88 = 11,590.41/x
  3. Step 3: Cross multiply
    21,021.51x = 29,009.88 × 11,590.41
  4. Step 4: Simplify right side
    21,021.51x = 336,236,403.25
  5. Step 5: Solve for x
    x = 336,236,403.25/21,021.51
  6. Step 6: Final answer
    x = 15,994.87

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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.