Home / 21,781.09-30,058.32-12,584.35

Finding the Fourth Proportional to 21,781.09, 30,058.32 and 12,584.35

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Solution

The fourth proportional to 21,781.09, 30,058.32 and 12,584.35 is: 17,366.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.09 : 30,058.32 = 12,584.35 : x
  2. Step 2: Convert to fraction form
    21,781.09/30,058.32 = 12,584.35/x
  3. Step 3: Cross multiply
    21,781.09x = 30,058.32 × 12,584.35
  4. Step 4: Simplify right side
    21,781.09x = 378,264,419.29
  5. Step 5: Solve for x
    x = 378,264,419.29/21,781.09
  6. Step 6: Final answer
    x = 17,366.64

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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.