Home / 21,239.34-29,311.83-12,741.84

Finding the Fourth Proportional to 21,239.34, 29,311.83 and 12,741.84

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Solution

The fourth proportional to 21,239.34, 29,311.83 and 12,741.84 is: 17,584.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.34 : 29,311.83 = 12,741.84 : x
  2. Step 2: Convert to fraction form
    21,239.34/29,311.83 = 12,741.84/x
  3. Step 3: Cross multiply
    21,239.34x = 29,311.83 × 12,741.84
  4. Step 4: Simplify right side
    21,239.34x = 373,486,647.97
  5. Step 5: Solve for x
    x = 373,486,647.97/21,239.34
  6. Step 6: Final answer
    x = 17,584.66

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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.