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Finding the Fourth Proportional to 28,793.60, 43,166.40 and 12,166.40

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Solution

The fourth proportional to 28,793.60, 43,166.40 and 12,166.40 is: 18,239.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.60 : 43,166.40 = 12,166.40 : x
  2. Step 2: Convert to fraction form
    28,793.60/43,166.40 = 12,166.40/x
  3. Step 3: Cross multiply
    28,793.60x = 43,166.40 × 12,166.40
  4. Step 4: Simplify right side
    28,793.60x = 525,179,688.96
  5. Step 5: Solve for x
    x = 525,179,688.96/28,793.60
  6. Step 6: Final answer
    x = 18,239.46

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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.