Home / 21,408.12-29,543.00-11,976.75

Finding the Fourth Proportional to 21,408.12, 29,543.00 and 11,976.75

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Solution

The fourth proportional to 21,408.12, 29,543.00 and 11,976.75 is: 16,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.12 : 29,543.00 = 11,976.75 : x
  2. Step 2: Convert to fraction form
    21,408.12/29,543.00 = 11,976.75/x
  3. Step 3: Cross multiply
    21,408.12x = 29,543.00 × 11,976.75
  4. Step 4: Simplify right side
    21,408.12x = 353,829,065.37
  5. Step 5: Solve for x
    x = 353,829,065.37/21,408.12
  6. Step 6: Final answer
    x = 16,527.80

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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.