Home / 21,293.06-29,385.32-11,861.62

Finding the Fourth Proportional to 21,293.06, 29,385.32 and 11,861.62

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Solution

The fourth proportional to 21,293.06, 29,385.32 and 11,861.62 is: 16,369.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.06 : 29,385.32 = 11,861.62 : x
  2. Step 2: Convert to fraction form
    21,293.06/29,385.32 = 11,861.62/x
  3. Step 3: Cross multiply
    21,293.06x = 29,385.32 × 11,861.62
  4. Step 4: Simplify right side
    21,293.06x = 348,557,499.42
  5. Step 5: Solve for x
    x = 348,557,499.42/21,293.06
  6. Step 6: Final answer
    x = 16,369.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.