Home / 12,821.52-19,233.09-5,425.01

Finding the Fourth Proportional to 12,821.52, 19,233.09 and 5,425.01

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Solution

The fourth proportional to 12,821.52, 19,233.09 and 5,425.01 is: 8,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.52 : 19,233.09 = 5,425.01 : x
  2. Step 2: Convert to fraction form
    12,821.52/19,233.09 = 5,425.01/x
  3. Step 3: Cross multiply
    12,821.52x = 19,233.09 × 5,425.01
  4. Step 4: Simplify right side
    12,821.52x = 104,339,609.42
  5. Step 5: Solve for x
    x = 104,339,609.42/12,821.52
  6. Step 6: Final answer
    x = 8,137.85

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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.