Home / 13,930.82-19,221.79-8,264.51

Finding the Fourth Proportional to 13,930.82, 19,221.79 and 8,264.51

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Solution

The fourth proportional to 13,930.82, 19,221.79 and 8,264.51 is: 11,403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.82 : 19,221.79 = 8,264.51 : x
  2. Step 2: Convert to fraction form
    13,930.82/19,221.79 = 8,264.51/x
  3. Step 3: Cross multiply
    13,930.82x = 19,221.79 × 8,264.51
  4. Step 4: Simplify right side
    13,930.82x = 158,858,675.67
  5. Step 5: Solve for x
    x = 158,858,675.67/13,930.82
  6. Step 6: Final answer
    x = 11,403.40

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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.