Home / 21,876.83-30,201.10-13,929.82

Finding the Fourth Proportional to 21,876.83, 30,201.10 and 13,929.82

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Solution

The fourth proportional to 21,876.83, 30,201.10 and 13,929.82 is: 19,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.83 : 30,201.10 = 13,929.82 : x
  2. Step 2: Convert to fraction form
    21,876.83/30,201.10 = 13,929.82/x
  3. Step 3: Cross multiply
    21,876.83x = 30,201.10 × 13,929.82
  4. Step 4: Simplify right side
    21,876.83x = 420,696,024.71
  5. Step 5: Solve for x
    x = 420,696,024.71/21,876.83
  6. Step 6: Final answer
    x = 19,230.21

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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.