Home / 28,114.77-42,183.88-12,331.15

Finding the Fourth Proportional to 28,114.77, 42,183.88 and 12,331.15

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Solution

The fourth proportional to 28,114.77, 42,183.88 and 12,331.15 is: 18,501.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.77 : 42,183.88 = 12,331.15 : x
  2. Step 2: Convert to fraction form
    28,114.77/42,183.88 = 12,331.15/x
  3. Step 3: Cross multiply
    28,114.77x = 42,183.88 × 12,331.15
  4. Step 4: Simplify right side
    28,114.77x = 520,175,540.94
  5. Step 5: Solve for x
    x = 520,175,540.94/28,114.77
  6. Step 6: Final answer
    x = 18,501.86

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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.