Home / 21,156.66-29,195.07-12,203.63

Finding the Fourth Proportional to 21,156.66, 29,195.07 and 12,203.63

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Solution

The fourth proportional to 21,156.66, 29,195.07 and 12,203.63 is: 16,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.66 : 29,195.07 = 12,203.63 : x
  2. Step 2: Convert to fraction form
    21,156.66/29,195.07 = 12,203.63/x
  3. Step 3: Cross multiply
    21,156.66x = 29,195.07 × 12,203.63
  4. Step 4: Simplify right side
    21,156.66x = 356,285,749.85
  5. Step 5: Solve for x
    x = 356,285,749.85/21,156.66
  6. Step 6: Final answer
    x = 16,840.36

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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.