Home / 28,445.54-39,245.49-18,379.91

Finding the Fourth Proportional to 28,445.54, 39,245.49 and 18,379.91

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Solution

The fourth proportional to 28,445.54, 39,245.49 and 18,379.91 is: 25,358.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.54 : 39,245.49 = 18,379.91 : x
  2. Step 2: Convert to fraction form
    28,445.54/39,245.49 = 18,379.91/x
  3. Step 3: Cross multiply
    28,445.54x = 39,245.49 × 18,379.91
  4. Step 4: Simplify right side
    28,445.54x = 721,328,574.11
  5. Step 5: Solve for x
    x = 721,328,574.11/28,445.54
  6. Step 6: Final answer
    x = 25,358.23

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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.