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Finding the Fourth Proportional to 19,640.86, 29,442.04 and 6,484.44

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Solution

The fourth proportional to 19,640.86, 29,442.04 and 6,484.44 is: 9,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.86 : 29,442.04 = 6,484.44 : x
  2. Step 2: Convert to fraction form
    19,640.86/29,442.04 = 6,484.44/x
  3. Step 3: Cross multiply
    19,640.86x = 29,442.04 × 6,484.44
  4. Step 4: Simplify right side
    19,640.86x = 190,915,141.86
  5. Step 5: Solve for x
    x = 190,915,141.86/19,640.86
  6. Step 6: Final answer
    x = 9,720.30

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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.