Home / 21,539.56-29,723.07-12,109.54

Finding the Fourth Proportional to 21,539.56, 29,723.07 and 12,109.54

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Solution

The fourth proportional to 21,539.56, 29,723.07 and 12,109.54 is: 16,710.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.56 : 29,723.07 = 12,109.54 : x
  2. Step 2: Convert to fraction form
    21,539.56/29,723.07 = 12,109.54/x
  3. Step 3: Cross multiply
    21,539.56x = 29,723.07 × 12,109.54
  4. Step 4: Simplify right side
    21,539.56x = 359,932,705.09
  5. Step 5: Solve for x
    x = 359,932,705.09/21,539.56
  6. Step 6: Final answer
    x = 16,710.31

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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.