Home / 12,857.79-19,288.84-4,095.39

Finding the Fourth Proportional to 12,857.79, 19,288.84 and 4,095.39

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Solution

The fourth proportional to 12,857.79, 19,288.84 and 4,095.39 is: 6,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.79 : 19,288.84 = 4,095.39 : x
  2. Step 2: Convert to fraction form
    12,857.79/19,288.84 = 4,095.39/x
  3. Step 3: Cross multiply
    12,857.79x = 19,288.84 × 4,095.39
  4. Step 4: Simplify right side
    12,857.79x = 78,995,322.45
  5. Step 5: Solve for x
    x = 78,995,322.45/12,857.79
  6. Step 6: Final answer
    x = 6,143.77

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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.