Home / 21,137.05-29,168.36-12,184.93

Finding the Fourth Proportional to 21,137.05, 29,168.36 and 12,184.93

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Solution

The fourth proportional to 21,137.05, 29,168.36 and 12,184.93 is: 16,814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.05 : 29,168.36 = 12,184.93 : x
  2. Step 2: Convert to fraction form
    21,137.05/29,168.36 = 12,184.93/x
  3. Step 3: Cross multiply
    21,137.05x = 29,168.36 × 12,184.93
  4. Step 4: Simplify right side
    21,137.05x = 355,414,363.89
  5. Step 5: Solve for x
    x = 355,414,363.89/21,137.05
  6. Step 6: Final answer
    x = 16,814.76

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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.