Home / 12,775.21-19,162.82-3,541.21

Finding the Fourth Proportional to 12,775.21, 19,162.82 and 3,541.21

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Solution

The fourth proportional to 12,775.21, 19,162.82 and 3,541.21 is: 5,311.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.21 : 19,162.82 = 3,541.21 : x
  2. Step 2: Convert to fraction form
    12,775.21/19,162.82 = 3,541.21/x
  3. Step 3: Cross multiply
    12,775.21x = 19,162.82 × 3,541.21
  4. Step 4: Simplify right side
    12,775.21x = 67,859,569.81
  5. Step 5: Solve for x
    x = 67,859,569.81/12,775.21
  6. Step 6: Final answer
    x = 5,311.82

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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.