Home / 21,733.44-29,986.80-12,780.24

Finding the Fourth Proportional to 21,733.44, 29,986.80 and 12,780.24

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Solution

The fourth proportional to 21,733.44, 29,986.80 and 12,780.24 is: 17,633.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,733.44 : 29,986.80 = 12,780.24 : x
  2. Step 2: Convert to fraction form
    21,733.44/29,986.80 = 12,780.24/x
  3. Step 3: Cross multiply
    21,733.44x = 29,986.80 × 12,780.24
  4. Step 4: Simplify right side
    21,733.44x = 383,238,500.83
  5. Step 5: Solve for x
    x = 383,238,500.83/21,733.44
  6. Step 6: Final answer
    x = 17,633.59

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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.