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Finding the Fourth Proportional to 11,969.28, 17,916.95 and 7,800.32

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Solution

The fourth proportional to 11,969.28, 17,916.95 and 7,800.32 is: 11,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.28 : 17,916.95 = 7,800.32 : x
  2. Step 2: Convert to fraction form
    11,969.28/17,916.95 = 7,800.32/x
  3. Step 3: Cross multiply
    11,969.28x = 17,916.95 × 7,800.32
  4. Step 4: Simplify right side
    11,969.28x = 139,757,814.84
  5. Step 5: Solve for x
    x = 139,757,814.84/11,969.28
  6. Step 6: Final answer
    x = 11,676.38

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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.