Home / 28,890.20-43,335.30-14,108.60

Finding the Fourth Proportional to 28,890.20, 43,335.30 and 14,108.60

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Solution

The fourth proportional to 28,890.20, 43,335.30 and 14,108.60 is: 21,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.20 : 43,335.30 = 14,108.60 : x
  2. Step 2: Convert to fraction form
    28,890.20/43,335.30 = 14,108.60/x
  3. Step 3: Cross multiply
    28,890.20x = 43,335.30 × 14,108.60
  4. Step 4: Simplify right side
    28,890.20x = 611,400,413.58
  5. Step 5: Solve for x
    x = 611,400,413.58/28,890.20
  6. Step 6: Final answer
    x = 21,162.90

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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.