Home / 28,445.05-39,237.24-18,379.41

Finding the Fourth Proportional to 28,445.05, 39,237.24 and 18,379.41

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Solution

The fourth proportional to 28,445.05, 39,237.24 and 18,379.41 is: 25,352.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.05 : 39,237.24 = 18,379.41 : x
  2. Step 2: Convert to fraction form
    28,445.05/39,237.24 = 18,379.41/x
  3. Step 3: Cross multiply
    28,445.05x = 39,237.24 × 18,379.41
  4. Step 4: Simplify right side
    28,445.05x = 721,157,087.94
  5. Step 5: Solve for x
    x = 721,157,087.94/28,445.05
  6. Step 6: Final answer
    x = 25,352.64

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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.