Home / 21,156.94-29,195.45-12,203.91

Finding the Fourth Proportional to 21,156.94, 29,195.45 and 12,203.91

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Solution

The fourth proportional to 21,156.94, 29,195.45 and 12,203.91 is: 16,840.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.94 : 29,195.45 = 12,203.91 : x
  2. Step 2: Convert to fraction form
    21,156.94/29,195.45 = 12,203.91/x
  3. Step 3: Cross multiply
    21,156.94x = 29,195.45 × 12,203.91
  4. Step 4: Simplify right side
    21,156.94x = 356,298,697.60
  5. Step 5: Solve for x
    x = 356,298,697.60/21,156.94
  6. Step 6: Final answer
    x = 16,840.75

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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.