Home / 19,916.80-29,839.20-9,505.60

Finding the Fourth Proportional to 19,916.80, 29,839.20 and 9,505.60

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Solution

The fourth proportional to 19,916.80, 29,839.20 and 9,505.60 is: 14,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.80 : 29,839.20 = 9,505.60 : x
  2. Step 2: Convert to fraction form
    19,916.80/29,839.20 = 9,505.60/x
  3. Step 3: Cross multiply
    19,916.80x = 29,839.20 × 9,505.60
  4. Step 4: Simplify right side
    19,916.80x = 283,639,499.52
  5. Step 5: Solve for x
    x = 283,639,499.52/19,916.80
  6. Step 6: Final answer
    x = 14,241.22

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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.