Home / 21,459.40-32,193.42-7,419.96

Finding the Fourth Proportional to 21,459.40, 32,193.42 and 7,419.96

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Solution

The fourth proportional to 21,459.40, 32,193.42 and 7,419.96 is: 11,131.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.40 : 32,193.42 = 7,419.96 : x
  2. Step 2: Convert to fraction form
    21,459.40/32,193.42 = 7,419.96/x
  3. Step 3: Cross multiply
    21,459.40x = 32,193.42 × 7,419.96
  4. Step 4: Simplify right side
    21,459.40x = 238,873,888.66
  5. Step 5: Solve for x
    x = 238,873,888.66/21,459.40
  6. Step 6: Final answer
    x = 11,131.43

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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.