Home / 28,385.85-42,577.96-8,661.54

Finding the Fourth Proportional to 28,385.85, 42,577.96 and 8,661.54

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Solution

The fourth proportional to 28,385.85, 42,577.96 and 8,661.54 is: 12,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.85 : 42,577.96 = 8,661.54 : x
  2. Step 2: Convert to fraction form
    28,385.85/42,577.96 = 8,661.54/x
  3. Step 3: Cross multiply
    28,385.85x = 42,577.96 × 8,661.54
  4. Step 4: Simplify right side
    28,385.85x = 368,790,447.46
  5. Step 5: Solve for x
    x = 368,790,447.46/28,385.85
  6. Step 6: Final answer
    x = 12,992.05

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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.