Home / 19,902.45-29,855.63-7,419.57

Finding the Fourth Proportional to 19,902.45, 29,855.63 and 7,419.57

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Solution

The fourth proportional to 19,902.45, 29,855.63 and 7,419.57 is: 11,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,902.45 : 29,855.63 = 7,419.57 : x
  2. Step 2: Convert to fraction form
    19,902.45/29,855.63 = 7,419.57/x
  3. Step 3: Cross multiply
    19,902.45x = 29,855.63 × 7,419.57
  4. Step 4: Simplify right side
    19,902.45x = 221,515,936.68
  5. Step 5: Solve for x
    x = 221,515,936.68/19,902.45
  6. Step 6: Final answer
    x = 11,130.08

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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.