Home / 19,961.93-29,942.90-9,428.49

Finding the Fourth Proportional to 19,961.93, 29,942.90 and 9,428.49

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Solution

The fourth proportional to 19,961.93, 29,942.90 and 9,428.49 is: 14,142.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.93 : 29,942.90 = 9,428.49 : x
  2. Step 2: Convert to fraction form
    19,961.93/29,942.90 = 9,428.49/x
  3. Step 3: Cross multiply
    19,961.93x = 29,942.90 × 9,428.49
  4. Step 4: Simplify right side
    19,961.93x = 282,316,286.08
  5. Step 5: Solve for x
    x = 282,316,286.08/19,961.93
  6. Step 6: Final answer
    x = 14,142.74

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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.