Home / 21,630.72-29,842.41-12,674.96

Finding the Fourth Proportional to 21,630.72, 29,842.41 and 12,674.96

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Solution

The fourth proportional to 21,630.72, 29,842.41 and 12,674.96 is: 17,486.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.72 : 29,842.41 = 12,674.96 : x
  2. Step 2: Convert to fraction form
    21,630.72/29,842.41 = 12,674.96/x
  3. Step 3: Cross multiply
    21,630.72x = 29,842.41 × 12,674.96
  4. Step 4: Simplify right side
    21,630.72x = 378,251,261.53
  5. Step 5: Solve for x
    x = 378,251,261.53/21,630.72
  6. Step 6: Final answer
    x = 17,486.76

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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.