Home / 10,946.48-16,420.32-3,155.09

Finding the Fourth Proportional to 10,946.48, 16,420.32 and 3,155.09

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Solution

The fourth proportional to 10,946.48, 16,420.32 and 3,155.09 is: 4,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,946.48 : 16,420.32 = 3,155.09 : x
  2. Step 2: Convert to fraction form
    10,946.48/16,420.32 = 3,155.09/x
  3. Step 3: Cross multiply
    10,946.48x = 16,420.32 × 3,155.09
  4. Step 4: Simplify right side
    10,946.48x = 51,807,505.33
  5. Step 5: Solve for x
    x = 51,807,505.33/10,946.48
  6. Step 6: Final answer
    x = 4,732.80

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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.