Home / 28,909.93-43,356.39-12,260.79

Finding the Fourth Proportional to 28,909.93, 43,356.39 and 12,260.79

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Solution

The fourth proportional to 28,909.93, 43,356.39 and 12,260.79 is: 18,387.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.93 : 43,356.39 = 12,260.79 : x
  2. Step 2: Convert to fraction form
    28,909.93/43,356.39 = 12,260.79/x
  3. Step 3: Cross multiply
    28,909.93x = 43,356.39 × 12,260.79
  4. Step 4: Simplify right side
    28,909.93x = 531,583,592.95
  5. Step 5: Solve for x
    x = 531,583,592.95/28,909.93
  6. Step 6: Final answer
    x = 18,387.58

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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.