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Finding the Fourth Proportional to 22,916.36, 34,345.80 and 12,385.94

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Solution

The fourth proportional to 22,916.36, 34,345.80 and 12,385.94 is: 18,563.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,916.36 : 34,345.80 = 12,385.94 : x
  2. Step 2: Convert to fraction form
    22,916.36/34,345.80 = 12,385.94/x
  3. Step 3: Cross multiply
    22,916.36x = 34,345.80 × 12,385.94
  4. Step 4: Simplify right side
    22,916.36x = 425,405,018.05
  5. Step 5: Solve for x
    x = 425,405,018.05/22,916.36
  6. Step 6: Final answer
    x = 18,563.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.