Home / 21,122.32-31,682.96-12,250.88

Finding the Fourth Proportional to 21,122.32, 31,682.96 and 12,250.88

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Solution

The fourth proportional to 21,122.32, 31,682.96 and 12,250.88 is: 18,376.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.32 : 31,682.96 = 12,250.88 : x
  2. Step 2: Convert to fraction form
    21,122.32/31,682.96 = 12,250.88/x
  3. Step 3: Cross multiply
    21,122.32x = 31,682.96 × 12,250.88
  4. Step 4: Simplify right side
    21,122.32x = 388,144,141.00
  5. Step 5: Solve for x
    x = 388,144,141.00/21,122.32
  6. Step 6: Final answer
    x = 18,376.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.