Home / 28,354.25-39,126.31-16,418.39

Finding the Fourth Proportional to 28,354.25, 39,126.31 and 16,418.39

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Solution

The fourth proportional to 28,354.25, 39,126.31 and 16,418.39 is: 22,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.25 : 39,126.31 = 16,418.39 : x
  2. Step 2: Convert to fraction form
    28,354.25/39,126.31 = 16,418.39/x
  3. Step 3: Cross multiply
    28,354.25x = 39,126.31 × 16,418.39
  4. Step 4: Simplify right side
    28,354.25x = 642,391,016.84
  5. Step 5: Solve for x
    x = 642,391,016.84/28,354.25
  6. Step 6: Final answer
    x = 22,655.90

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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.