Home / 21,179.92-29,227.32-11,748.40

Finding the Fourth Proportional to 21,179.92, 29,227.32 and 11,748.40

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Solution

The fourth proportional to 21,179.92, 29,227.32 and 11,748.40 is: 16,212.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.92 : 29,227.32 = 11,748.40 : x
  2. Step 2: Convert to fraction form
    21,179.92/29,227.32 = 11,748.40/x
  3. Step 3: Cross multiply
    21,179.92x = 29,227.32 × 11,748.40
  4. Step 4: Simplify right side
    21,179.92x = 343,374,246.29
  5. Step 5: Solve for x
    x = 343,374,246.29/21,179.92
  6. Step 6: Final answer
    x = 16,212.25

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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.