Home / 28,379.16-39,157.26-16,441.80

Finding the Fourth Proportional to 28,379.16, 39,157.26 and 16,441.80

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Solution

The fourth proportional to 28,379.16, 39,157.26 and 16,441.80 is: 22,686.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.16 : 39,157.26 = 16,441.80 : x
  2. Step 2: Convert to fraction form
    28,379.16/39,157.26 = 16,441.80/x
  3. Step 3: Cross multiply
    28,379.16x = 39,157.26 × 16,441.80
  4. Step 4: Simplify right side
    28,379.16x = 643,815,837.47
  5. Step 5: Solve for x
    x = 643,815,837.47/28,379.16
  6. Step 6: Final answer
    x = 22,686.22

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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.