Home / 21,134.31-29,163.30-12,634.74

Finding the Fourth Proportional to 21,134.31, 29,163.30 and 12,634.74

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Solution

The fourth proportional to 21,134.31, 29,163.30 and 12,634.74 is: 17,434.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.31 : 29,163.30 = 12,634.74 : x
  2. Step 2: Convert to fraction form
    21,134.31/29,163.30 = 12,634.74/x
  3. Step 3: Cross multiply
    21,134.31x = 29,163.30 × 12,634.74
  4. Step 4: Simplify right side
    21,134.31x = 368,470,713.04
  5. Step 5: Solve for x
    x = 368,470,713.04/21,134.31
  6. Step 6: Final answer
    x = 17,434.72

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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.