Home / 21,600.55-29,808.62-12,172.15

Finding the Fourth Proportional to 21,600.55, 29,808.62 and 12,172.15

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Solution

The fourth proportional to 21,600.55, 29,808.62 and 12,172.15 is: 16,797.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.55 : 29,808.62 = 12,172.15 : x
  2. Step 2: Convert to fraction form
    21,600.55/29,808.62 = 12,172.15/x
  3. Step 3: Cross multiply
    21,600.55x = 29,808.62 × 12,172.15
  4. Step 4: Simplify right side
    21,600.55x = 362,834,993.93
  5. Step 5: Solve for x
    x = 362,834,993.93/21,600.55
  6. Step 6: Final answer
    x = 16,797.49

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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.