Home / 21,707.09-29,954.96-12,275.85

Finding the Fourth Proportional to 21,707.09, 29,954.96 and 12,275.85

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Solution

The fourth proportional to 21,707.09, 29,954.96 and 12,275.85 is: 16,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.09 : 29,954.96 = 12,275.85 : x
  2. Step 2: Convert to fraction form
    21,707.09/29,954.96 = 12,275.85/x
  3. Step 3: Cross multiply
    21,707.09x = 29,954.96 × 12,275.85
  4. Step 4: Simplify right side
    21,707.09x = 367,722,761.75
  5. Step 5: Solve for x
    x = 367,722,761.75/21,707.09
  6. Step 6: Final answer
    x = 16,940.22

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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.