Home / 12,912.21-19,360.57-4,475.92

Finding the Fourth Proportional to 12,912.21, 19,360.57 and 4,475.92

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Solution

The fourth proportional to 12,912.21, 19,360.57 and 4,475.92 is: 6,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.21 : 19,360.57 = 4,475.92 : x
  2. Step 2: Convert to fraction form
    12,912.21/19,360.57 = 4,475.92/x
  3. Step 3: Cross multiply
    12,912.21x = 19,360.57 × 4,475.92
  4. Step 4: Simplify right side
    12,912.21x = 86,656,340.09
  5. Step 5: Solve for x
    x = 86,656,340.09/12,912.21
  6. Step 6: Final answer
    x = 6,711.20

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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.