Home / 20,476.60-30,747.30-15,551.80

Finding the Fourth Proportional to 20,476.60, 30,747.30 and 15,551.80

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Solution

The fourth proportional to 20,476.60, 30,747.30 and 15,551.80 is: 23,352.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,476.60 : 30,747.30 = 15,551.80 : x
  2. Step 2: Convert to fraction form
    20,476.60/30,747.30 = 15,551.80/x
  3. Step 3: Cross multiply
    20,476.60x = 30,747.30 × 15,551.80
  4. Step 4: Simplify right side
    20,476.60x = 478,175,860.14
  5. Step 5: Solve for x
    x = 478,175,860.14/20,476.60
  6. Step 6: Final answer
    x = 23,352.31

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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.