Home / 28,339.11-39,107.34-16,402.21

Finding the Fourth Proportional to 28,339.11, 39,107.34 and 16,402.21

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Solution

The fourth proportional to 28,339.11, 39,107.34 and 16,402.21 is: 22,634.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.11 : 39,107.34 = 16,402.21 : x
  2. Step 2: Convert to fraction form
    28,339.11/39,107.34 = 16,402.21/x
  3. Step 3: Cross multiply
    28,339.11x = 39,107.34 × 16,402.21
  4. Step 4: Simplify right side
    28,339.11x = 641,446,705.45
  5. Step 5: Solve for x
    x = 641,446,705.45/28,339.11
  6. Step 6: Final answer
    x = 22,634.68

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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.