Home / 28,385.90-39,172.55-16,456.16

Finding the Fourth Proportional to 28,385.90, 39,172.55 and 16,456.16

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Solution

The fourth proportional to 28,385.90, 39,172.55 and 16,456.16 is: 22,709.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.90 : 39,172.55 = 16,456.16 : x
  2. Step 2: Convert to fraction form
    28,385.90/39,172.55 = 16,456.16/x
  3. Step 3: Cross multiply
    28,385.90x = 39,172.55 × 16,456.16
  4. Step 4: Simplify right side
    28,385.90x = 644,629,766.06
  5. Step 5: Solve for x
    x = 644,629,766.06/28,385.90
  6. Step 6: Final answer
    x = 22,709.51

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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.