Home / 21,042.81-31,557.90-17,335.83

Finding the Fourth Proportional to 21,042.81, 31,557.90 and 17,335.83

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Solution

The fourth proportional to 21,042.81, 31,557.90 and 17,335.83 is: 25,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.81 : 31,557.90 = 17,335.83 : x
  2. Step 2: Convert to fraction form
    21,042.81/31,557.90 = 17,335.83/x
  3. Step 3: Cross multiply
    21,042.81x = 31,557.90 × 17,335.83
  4. Step 4: Simplify right side
    21,042.81x = 547,082,389.56
  5. Step 5: Solve for x
    x = 547,082,389.56/21,042.81
  6. Step 6: Final answer
    x = 25,998.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.