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Finding the Fourth Proportional to 19,813.38, 29,699.11 and 7,325.38

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Solution

The fourth proportional to 19,813.38, 29,699.11 and 7,325.38 is: 10,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.38 : 29,699.11 = 7,325.38 : x
  2. Step 2: Convert to fraction form
    19,813.38/29,699.11 = 7,325.38/x
  3. Step 3: Cross multiply
    19,813.38x = 29,699.11 × 7,325.38
  4. Step 4: Simplify right side
    19,813.38x = 217,557,266.41
  5. Step 5: Solve for x
    x = 217,557,266.41/19,813.38
  6. Step 6: Final answer
    x = 10,980.32

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1.5x scale

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.