Home / 19,761.05-29,638.37-7,278.01

Finding the Fourth Proportional to 19,761.05, 29,638.37 and 7,278.01

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Solution

The fourth proportional to 19,761.05, 29,638.37 and 7,278.01 is: 10,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.05 : 29,638.37 = 7,278.01 : x
  2. Step 2: Convert to fraction form
    19,761.05/29,638.37 = 7,278.01/x
  3. Step 3: Cross multiply
    19,761.05x = 29,638.37 × 7,278.01
  4. Step 4: Simplify right side
    19,761.05x = 215,708,297.34
  5. Step 5: Solve for x
    x = 215,708,297.34/19,761.05
  6. Step 6: Final answer
    x = 10,915.83

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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.