Home / 21,708.14-29,956.84-12,276.50

Finding the Fourth Proportional to 21,708.14, 29,956.84 and 12,276.50

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Solution

The fourth proportional to 21,708.14, 29,956.84 and 12,276.50 is: 16,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.14 : 29,956.84 = 12,276.50 : x
  2. Step 2: Convert to fraction form
    21,708.14/29,956.84 = 12,276.50/x
  3. Step 3: Cross multiply
    21,708.14x = 29,956.84 × 12,276.50
  4. Step 4: Simplify right side
    21,708.14x = 367,764,965.78
  5. Step 5: Solve for x
    x = 367,764,965.78/21,708.14
  6. Step 6: Final answer
    x = 16,941.34

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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.