Home / 12,977.42-19,471.71-4,215.02

Finding the Fourth Proportional to 12,977.42, 19,471.71 and 4,215.02

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Solution

The fourth proportional to 12,977.42, 19,471.71 and 4,215.02 is: 6,324.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.42 : 19,471.71 = 4,215.02 : x
  2. Step 2: Convert to fraction form
    12,977.42/19,471.71 = 4,215.02/x
  3. Step 3: Cross multiply
    12,977.42x = 19,471.71 × 4,215.02
  4. Step 4: Simplify right side
    12,977.42x = 82,073,647.08
  5. Step 5: Solve for x
    x = 82,073,647.08/12,977.42
  6. Step 6: Final answer
    x = 6,324.34

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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.