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Finding the Fourth Proportional to 12,872.55, 19,303.92 and 4,436.64

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Solution

The fourth proportional to 12,872.55, 19,303.92 and 4,436.64 is: 6,653.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.55 : 19,303.92 = 4,436.64 : x
  2. Step 2: Convert to fraction form
    12,872.55/19,303.92 = 4,436.64/x
  3. Step 3: Cross multiply
    12,872.55x = 19,303.92 × 4,436.64
  4. Step 4: Simplify right side
    12,872.55x = 85,644,543.63
  5. Step 5: Solve for x
    x = 85,644,543.63/12,872.55
  6. Step 6: Final answer
    x = 6,653.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.