Home / 28,119.62-42,185.11-12,537.26

Finding the Fourth Proportional to 28,119.62, 42,185.11 and 12,537.26

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Solution

The fourth proportional to 28,119.62, 42,185.11 and 12,537.26 is: 18,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.62 : 42,185.11 = 12,537.26 : x
  2. Step 2: Convert to fraction form
    28,119.62/42,185.11 = 12,537.26/x
  3. Step 3: Cross multiply
    28,119.62x = 42,185.11 × 12,537.26
  4. Step 4: Simplify right side
    28,119.62x = 528,885,692.20
  5. Step 5: Solve for x
    x = 528,885,692.20/28,119.62
  6. Step 6: Final answer
    x = 18,808.42

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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.