Home / 19,815.82-27,341.34-13,443.28

Finding the Fourth Proportional to 19,815.82, 27,341.34 and 13,443.28

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Solution

The fourth proportional to 19,815.82, 27,341.34 and 13,443.28 is: 18,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.82 : 27,341.34 = 13,443.28 : x
  2. Step 2: Convert to fraction form
    19,815.82/27,341.34 = 13,443.28/x
  3. Step 3: Cross multiply
    19,815.82x = 27,341.34 × 13,443.28
  4. Step 4: Simplify right side
    19,815.82x = 367,557,289.20
  5. Step 5: Solve for x
    x = 367,557,289.20/19,815.82
  6. Step 6: Final answer
    x = 18,548.68

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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.