Home / 28,914.39-43,339.70-18,914.99

Finding the Fourth Proportional to 28,914.39, 43,339.70 and 18,914.99

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Solution

The fourth proportional to 28,914.39, 43,339.70 and 18,914.99 is: 28,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.39 : 43,339.70 = 18,914.99 : x
  2. Step 2: Convert to fraction form
    28,914.39/43,339.70 = 18,914.99/x
  3. Step 3: Cross multiply
    28,914.39x = 43,339.70 × 18,914.99
  4. Step 4: Simplify right side
    28,914.39x = 819,769,822.69
  5. Step 5: Solve for x
    x = 819,769,822.69/28,914.39
  6. Step 6: Final answer
    x = 28,351.62

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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.