Home / 21,087.14-29,103.10-12,134.41

Finding the Fourth Proportional to 21,087.14, 29,103.10 and 12,134.41

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Solution

The fourth proportional to 21,087.14, 29,103.10 and 12,134.41 is: 16,747.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.14 : 29,103.10 = 12,134.41 : x
  2. Step 2: Convert to fraction form
    21,087.14/29,103.10 = 12,134.41/x
  3. Step 3: Cross multiply
    21,087.14x = 29,103.10 × 12,134.41
  4. Step 4: Simplify right side
    21,087.14x = 353,148,844.58
  5. Step 5: Solve for x
    x = 353,148,844.58/21,087.14
  6. Step 6: Final answer
    x = 16,747.12

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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.