Home / 21,290.86-29,383.70-11,731.73

Finding the Fourth Proportional to 21,290.86, 29,383.70 and 11,731.73

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Solution

The fourth proportional to 21,290.86, 29,383.70 and 11,731.73 is: 16,191.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.86 : 29,383.70 = 11,731.73 : x
  2. Step 2: Convert to fraction form
    21,290.86/29,383.70 = 11,731.73/x
  3. Step 3: Cross multiply
    21,290.86x = 29,383.70 × 11,731.73
  4. Step 4: Simplify right side
    21,290.86x = 344,721,693.60
  5. Step 5: Solve for x
    x = 344,721,693.60/21,290.86
  6. Step 6: Final answer
    x = 16,191.07

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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.