Home / 21,042.21-29,040.84-12,089.70

Finding the Fourth Proportional to 21,042.21, 29,040.84 and 12,089.70

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Solution

The fourth proportional to 21,042.21, 29,040.84 and 12,089.70 is: 16,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.21 : 29,040.84 = 12,089.70 : x
  2. Step 2: Convert to fraction form
    21,042.21/29,040.84 = 12,089.70/x
  3. Step 3: Cross multiply
    21,042.21x = 29,040.84 × 12,089.70
  4. Step 4: Simplify right side
    21,042.21x = 351,095,043.35
  5. Step 5: Solve for x
    x = 351,095,043.35/21,042.21
  6. Step 6: Final answer
    x = 16,685.27

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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.