Home / 21,419.64-32,121.48-7,375.76

Finding the Fourth Proportional to 21,419.64, 32,121.48 and 7,375.76

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Solution

The fourth proportional to 21,419.64, 32,121.48 and 7,375.76 is: 11,060.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.64 : 32,121.48 = 7,375.76 : x
  2. Step 2: Convert to fraction form
    21,419.64/32,121.48 = 7,375.76/x
  3. Step 3: Cross multiply
    21,419.64x = 32,121.48 × 7,375.76
  4. Step 4: Simplify right side
    21,419.64x = 236,920,327.32
  5. Step 5: Solve for x
    x = 236,920,327.32/21,419.64
  6. Step 6: Final answer
    x = 11,060.89

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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.