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Finding the Fourth Proportional to 30,999.86, 46,485.22 and 21,650.44

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Solution

The fourth proportional to 30,999.86, 46,485.22 and 21,650.44 is: 32,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,999.86 : 46,485.22 = 21,650.44 : x
  2. Step 2: Convert to fraction form
    30,999.86/46,485.22 = 21,650.44/x
  3. Step 3: Cross multiply
    30,999.86x = 46,485.22 × 21,650.44
  4. Step 4: Simplify right side
    30,999.86x = 1,006,425,363.02
  5. Step 5: Solve for x
    x = 1,006,425,363.02/30,999.86
  6. Step 6: Final answer
    x = 32,465.48

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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.