Home / 21,179.93-29,228.32-11,748.49

Finding the Fourth Proportional to 21,179.93, 29,228.32 and 11,748.49

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Solution

The fourth proportional to 21,179.93, 29,228.32 and 11,748.49 is: 16,212.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.93 : 29,228.32 = 11,748.49 : x
  2. Step 2: Convert to fraction form
    21,179.93/29,228.32 = 11,748.49/x
  3. Step 3: Cross multiply
    21,179.93x = 29,228.32 × 11,748.49
  4. Step 4: Simplify right side
    21,179.93x = 343,388,698.22
  5. Step 5: Solve for x
    x = 343,388,698.22/21,179.93
  6. Step 6: Final answer
    x = 16,212.93

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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.