Home / 21,157.80-31,726.44-6,363.96

Finding the Fourth Proportional to 21,157.80, 31,726.44 and 6,363.96

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Solution

The fourth proportional to 21,157.80, 31,726.44 and 6,363.96 is: 9,542.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.80 : 31,726.44 = 6,363.96 : x
  2. Step 2: Convert to fraction form
    21,157.80/31,726.44 = 6,363.96/x
  3. Step 3: Cross multiply
    21,157.80x = 31,726.44 × 6,363.96
  4. Step 4: Simplify right side
    21,157.80x = 201,905,795.10
  5. Step 5: Solve for x
    x = 201,905,795.10/21,157.80
  6. Step 6: Final answer
    x = 9,542.85

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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.