Home / 21,730.44-29,988.30-12,777.96

Finding the Fourth Proportional to 21,730.44, 29,988.30 and 12,777.96

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Solution

The fourth proportional to 21,730.44, 29,988.30 and 12,777.96 is: 17,633.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.44 : 29,988.30 = 12,777.96 : x
  2. Step 2: Convert to fraction form
    21,730.44/29,988.30 = 12,777.96/x
  3. Step 3: Cross multiply
    21,730.44x = 29,988.30 × 12,777.96
  4. Step 4: Simplify right side
    21,730.44x = 383,189,297.87
  5. Step 5: Solve for x
    x = 383,189,297.87/21,730.44
  6. Step 6: Final answer
    x = 17,633.76

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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.