Home / 28,268.70-42,363.81-12,450.00

Finding the Fourth Proportional to 28,268.70, 42,363.81 and 12,450.00

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Solution

The fourth proportional to 28,268.70, 42,363.81 and 12,450.00 is: 18,657.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.70 : 42,363.81 = 12,450.00 : x
  2. Step 2: Convert to fraction form
    28,268.70/42,363.81 = 12,450.00/x
  3. Step 3: Cross multiply
    28,268.70x = 42,363.81 × 12,450.00
  4. Step 4: Simplify right side
    28,268.70x = 527,429,593.36
  5. Step 5: Solve for x
    x = 527,429,593.36/28,268.70
  6. Step 6: Final answer
    x = 18,657.73

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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.