Home / 21,093.40-29,108.07-12,134.80

Finding the Fourth Proportional to 21,093.40, 29,108.07 and 12,134.80

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Solution

The fourth proportional to 21,093.40, 29,108.07 and 12,134.80 is: 16,745.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.40 : 29,108.07 = 12,134.80 : x
  2. Step 2: Convert to fraction form
    21,093.40/29,108.07 = 12,134.80/x
  3. Step 3: Cross multiply
    21,093.40x = 29,108.07 × 12,134.80
  4. Step 4: Simplify right side
    21,093.40x = 353,220,607.84
  5. Step 5: Solve for x
    x = 353,220,607.84/21,093.40
  6. Step 6: Final answer
    x = 16,745.55

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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.