Home / 12,912.20-19,368.30-12,717.80

Finding the Fourth Proportional to 12,912.20, 19,368.30 and 12,717.80

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Solution

The fourth proportional to 12,912.20, 19,368.30 and 12,717.80 is: 19,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.20 : 19,368.30 = 12,717.80 : x
  2. Step 2: Convert to fraction form
    12,912.20/19,368.30 = 12,717.80/x
  3. Step 3: Cross multiply
    12,912.20x = 19,368.30 × 12,717.80
  4. Step 4: Simplify right side
    12,912.20x = 246,322,165.74
  5. Step 5: Solve for x
    x = 246,322,165.74/12,912.20
  6. Step 6: Final answer
    x = 19,076.70

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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.