Home / 12,857.92-19,273.52-5,456.16

Finding the Fourth Proportional to 12,857.92, 19,273.52 and 5,456.16

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Solution

The fourth proportional to 12,857.92, 19,273.52 and 5,456.16 is: 8,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.92 : 19,273.52 = 5,456.16 : x
  2. Step 2: Convert to fraction form
    12,857.92/19,273.52 = 5,456.16/x
  3. Step 3: Cross multiply
    12,857.92x = 19,273.52 × 5,456.16
  4. Step 4: Simplify right side
    12,857.92x = 105,159,408.88
  5. Step 5: Solve for x
    x = 105,159,408.88/12,857.92
  6. Step 6: Final answer
    x = 8,178.57

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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.