Home / 21,635.52-29,858.40-12,200.64

Finding the Fourth Proportional to 21,635.52, 29,858.40 and 12,200.64

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Solution

The fourth proportional to 21,635.52, 29,858.40 and 12,200.64 is: 16,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.52 : 29,858.40 = 12,200.64 : x
  2. Step 2: Convert to fraction form
    21,635.52/29,858.40 = 12,200.64/x
  3. Step 3: Cross multiply
    21,635.52x = 29,858.40 × 12,200.64
  4. Step 4: Simplify right side
    21,635.52x = 364,291,589.38
  5. Step 5: Solve for x
    x = 364,291,589.38/21,635.52
  6. Step 6: Final answer
    x = 16,837.66

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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.