Home / 28,436.21-39,234.08-18,365.07

Finding the Fourth Proportional to 28,436.21, 39,234.08 and 18,365.07

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Solution

The fourth proportional to 28,436.21, 39,234.08 and 18,365.07 is: 25,338.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.21 : 39,234.08 = 18,365.07 : x
  2. Step 2: Convert to fraction form
    28,436.21/39,234.08 = 18,365.07/x
  3. Step 3: Cross multiply
    28,436.21x = 39,234.08 × 18,365.07
  4. Step 4: Simplify right side
    28,436.21x = 720,536,625.59
  5. Step 5: Solve for x
    x = 720,536,625.59/28,436.21
  6. Step 6: Final answer
    x = 25,338.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.