Home / 19,764.98-29,644.36-6,438.45

Finding the Fourth Proportional to 19,764.98, 29,644.36 and 6,438.45

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Solution

The fourth proportional to 19,764.98, 29,644.36 and 6,438.45 is: 9,656.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,764.98 : 29,644.36 = 6,438.45 : x
  2. Step 2: Convert to fraction form
    19,764.98/29,644.36 = 6,438.45/x
  3. Step 3: Cross multiply
    19,764.98x = 29,644.36 × 6,438.45
  4. Step 4: Simplify right side
    19,764.98x = 190,863,729.64
  5. Step 5: Solve for x
    x = 190,863,729.64/19,764.98
  6. Step 6: Final answer
    x = 9,656.66

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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.