Home / 19,731-27,228.96-11,352.36

Finding the Fourth Proportional to 19,731, 27,228.96 and 11,352.36

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Solution

The fourth proportional to 19,731, 27,228.96 and 11,352.36 is: 15,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731 : 27,228.96 = 11,352.36 : x
  2. Step 2: Convert to fraction form
    19,731/27,228.96 = 11,352.36/x
  3. Step 3: Cross multiply
    19,731x = 27,228.96 × 11,352.36
  4. Step 4: Simplify right side
    19,731x = 309,112,956.35
  5. Step 5: Solve for x
    x = 309,112,956.35/19,731
  6. Step 6: Final answer
    x = 15,666.36

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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.