Home / 19,857.72-27,400.41-11,358.47

Finding the Fourth Proportional to 19,857.72, 27,400.41 and 11,358.47

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Solution

The fourth proportional to 19,857.72, 27,400.41 and 11,358.47 is: 15,672.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.72 : 27,400.41 = 11,358.47 : x
  2. Step 2: Convert to fraction form
    19,857.72/27,400.41 = 11,358.47/x
  3. Step 3: Cross multiply
    19,857.72x = 27,400.41 × 11,358.47
  4. Step 4: Simplify right side
    19,857.72x = 311,226,734.97
  5. Step 5: Solve for x
    x = 311,226,734.97/19,857.72
  6. Step 6: Final answer
    x = 15,672.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.