Home / 12,900.20-19,376.21-11,273.72

Finding the Fourth Proportional to 12,900.20, 19,376.21 and 11,273.72

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Solution

The fourth proportional to 12,900.20, 19,376.21 and 11,273.72 is: 16,933.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.20 : 19,376.21 = 11,273.72 : x
  2. Step 2: Convert to fraction form
    12,900.20/19,376.21 = 11,273.72/x
  3. Step 3: Cross multiply
    12,900.20x = 19,376.21 × 11,273.72
  4. Step 4: Simplify right side
    12,900.20x = 218,441,897.50
  5. Step 5: Solve for x
    x = 218,441,897.50/12,900.20
  6. Step 6: Final answer
    x = 16,933.22

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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.