Home / 28,912.72-43,374.88-12,272.62

Finding the Fourth Proportional to 28,912.72, 43,374.88 and 12,272.62

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Solution

The fourth proportional to 28,912.72, 43,374.88 and 12,272.62 is: 18,411.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.72 : 43,374.88 = 12,272.62 : x
  2. Step 2: Convert to fraction form
    28,912.72/43,374.88 = 12,272.62/x
  3. Step 3: Cross multiply
    28,912.72x = 43,374.88 × 12,272.62
  4. Step 4: Simplify right side
    28,912.72x = 532,323,419.79
  5. Step 5: Solve for x
    x = 532,323,419.79/28,912.72
  6. Step 6: Final answer
    x = 18,411.39

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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.