Home / 28,115.80-42,144.90-15,616.60

Finding the Fourth Proportional to 28,115.80, 42,144.90 and 15,616.60

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Solution

The fourth proportional to 28,115.80, 42,144.90 and 15,616.60 is: 23,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.80 : 42,144.90 = 15,616.60 : x
  2. Step 2: Convert to fraction form
    28,115.80/42,144.90 = 15,616.60/x
  3. Step 3: Cross multiply
    28,115.80x = 42,144.90 × 15,616.60
  4. Step 4: Simplify right side
    28,115.80x = 658,160,045.34
  5. Step 5: Solve for x
    x = 658,160,045.34/28,115.80
  6. Step 6: Final answer
    x = 23,408.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.