Home / 28,305.70-42,462.60-8,585.80

Finding the Fourth Proportional to 28,305.70, 42,462.60 and 8,585.80

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Solution

The fourth proportional to 28,305.70, 42,462.60 and 8,585.80 is: 12,879.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.70 : 42,462.60 = 8,585.80 : x
  2. Step 2: Convert to fraction form
    28,305.70/42,462.60 = 8,585.80/x
  3. Step 3: Cross multiply
    28,305.70x = 42,462.60 × 8,585.80
  4. Step 4: Simplify right side
    28,305.70x = 364,575,391.08
  5. Step 5: Solve for x
    x = 364,575,391.08/28,305.70
  6. Step 6: Final answer
    x = 12,879.93

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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.