Home / 21,288.86-31,933.29-5,706.89

Finding the Fourth Proportional to 21,288.86, 31,933.29 and 5,706.89

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Solution

The fourth proportional to 21,288.86, 31,933.29 and 5,706.89 is: 8,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.86 : 31,933.29 = 5,706.89 : x
  2. Step 2: Convert to fraction form
    21,288.86/31,933.29 = 5,706.89/x
  3. Step 3: Cross multiply
    21,288.86x = 31,933.29 × 5,706.89
  4. Step 4: Simplify right side
    21,288.86x = 182,239,773.37
  5. Step 5: Solve for x
    x = 182,239,773.37/21,288.86
  6. Step 6: Final answer
    x = 8,560.34

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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.