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Finding the Fourth Proportional to 22,912.10, 34,368.15 and 19,020.90

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Solution

The fourth proportional to 22,912.10, 34,368.15 and 19,020.90 is: 28,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,912.10 : 34,368.15 = 19,020.90 : x
  2. Step 2: Convert to fraction form
    22,912.10/34,368.15 = 19,020.90/x
  3. Step 3: Cross multiply
    22,912.10x = 34,368.15 × 19,020.90
  4. Step 4: Simplify right side
    22,912.10x = 653,713,144.34
  5. Step 5: Solve for x
    x = 653,713,144.34/22,912.10
  6. Step 6: Final answer
    x = 28,531.35

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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.