Home / 21,708.56-29,957.82-12,276.92

Finding the Fourth Proportional to 21,708.56, 29,957.82 and 12,276.92

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Solution

The fourth proportional to 21,708.56, 29,957.82 and 12,276.92 is: 16,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.56 : 29,957.82 = 12,276.92 : x
  2. Step 2: Convert to fraction form
    21,708.56/29,957.82 = 12,276.92/x
  3. Step 3: Cross multiply
    21,708.56x = 29,957.82 × 12,276.92
  4. Step 4: Simplify right side
    21,708.56x = 367,789,759.51
  5. Step 5: Solve for x
    x = 367,789,759.51/21,708.56
  6. Step 6: Final answer
    x = 16,942.15

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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.