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Finding the Fourth Proportional to 16,916.40, 25,385.40 and 9,896.40

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Solution

The fourth proportional to 16,916.40, 25,385.40 and 9,896.40 is: 14,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,916.40 : 25,385.40 = 9,896.40 : x
  2. Step 2: Convert to fraction form
    16,916.40/25,385.40 = 9,896.40/x
  3. Step 3: Cross multiply
    16,916.40x = 25,385.40 × 9,896.40
  4. Step 4: Simplify right side
    16,916.40x = 251,224,072.56
  5. Step 5: Solve for x
    x = 251,224,072.56/16,916.40
  6. Step 6: Final answer
    x = 14,850.92

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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.