Home / 21,489.48-29,653.34-11,928.66

Finding the Fourth Proportional to 21,489.48, 29,653.34 and 11,928.66

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Solution

The fourth proportional to 21,489.48, 29,653.34 and 11,928.66 is: 16,460.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.48 : 29,653.34 = 11,928.66 : x
  2. Step 2: Convert to fraction form
    21,489.48/29,653.34 = 11,928.66/x
  3. Step 3: Cross multiply
    21,489.48x = 29,653.34 × 11,928.66
  4. Step 4: Simplify right side
    21,489.48x = 353,724,610.72
  5. Step 5: Solve for x
    x = 353,724,610.72/21,489.48
  6. Step 6: Final answer
    x = 16,460.36

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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.