Home / 82,215.29-123,322.94-19,885.79

Finding the Fourth Proportional to 82,215.29, 123,322.94 and 19,885.79

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Solution

The fourth proportional to 82,215.29, 123,322.94 and 19,885.79 is: 29,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,215.29 : 123,322.94 = 19,885.79 : x
  2. Step 2: Convert to fraction form
    82,215.29/123,322.94 = 19,885.79/x
  3. Step 3: Cross multiply
    82,215.29x = 123,322.94 × 19,885.79
  4. Step 4: Simplify right side
    82,215.29x = 2,452,373,370.98
  5. Step 5: Solve for x
    x = 2,452,373,370.98/82,215.29
  6. Step 6: Final answer
    x = 29,828.68

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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.