Home / 28,389.29-39,175.79-16,456.37

Finding the Fourth Proportional to 28,389.29, 39,175.79 and 16,456.37

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Solution

The fourth proportional to 28,389.29, 39,175.79 and 16,456.37 is: 22,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.29 : 39,175.79 = 16,456.37 : x
  2. Step 2: Convert to fraction form
    28,389.29/39,175.79 = 16,456.37/x
  3. Step 3: Cross multiply
    28,389.29x = 39,175.79 × 16,456.37
  4. Step 4: Simplify right side
    28,389.29x = 644,691,017.12
  5. Step 5: Solve for x
    x = 644,691,017.12/28,389.29
  6. Step 6: Final answer
    x = 22,708.96

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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.