Home / 21,137.40-29,169.36-12,184.92

Finding the Fourth Proportional to 21,137.40, 29,169.36 and 12,184.92

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Solution

The fourth proportional to 21,137.40, 29,169.36 and 12,184.92 is: 16,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.40 : 29,169.36 = 12,184.92 : x
  2. Step 2: Convert to fraction form
    21,137.40/29,169.36 = 12,184.92/x
  3. Step 3: Cross multiply
    21,137.40x = 29,169.36 × 12,184.92
  4. Step 4: Simplify right side
    21,137.40x = 355,426,318.05
  5. Step 5: Solve for x
    x = 355,426,318.05/21,137.40
  6. Step 6: Final answer
    x = 16,815.04

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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.