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Finding the Fourth Proportional to 12,672.96, 19,012.80 and 4,353.60

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Solution

The fourth proportional to 12,672.96, 19,012.80 and 4,353.60 is: 6,531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.96 : 19,012.80 = 4,353.60 : x
  2. Step 2: Convert to fraction form
    12,672.96/19,012.80 = 4,353.60/x
  3. Step 3: Cross multiply
    12,672.96x = 19,012.80 × 4,353.60
  4. Step 4: Simplify right side
    12,672.96x = 82,774,126.08
  5. Step 5: Solve for x
    x = 82,774,126.08/12,672.96
  6. Step 6: Final answer
    x = 6,531.55

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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.