Home / 28,206.83-42,311.16-8,485.56

Finding the Fourth Proportional to 28,206.83, 42,311.16 and 8,485.56

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Solution

The fourth proportional to 28,206.83, 42,311.16 and 8,485.56 is: 12,728.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.83 : 42,311.16 = 8,485.56 : x
  2. Step 2: Convert to fraction form
    28,206.83/42,311.16 = 8,485.56/x
  3. Step 3: Cross multiply
    28,206.83x = 42,311.16 × 8,485.56
  4. Step 4: Simplify right side
    28,206.83x = 359,033,886.85
  5. Step 5: Solve for x
    x = 359,033,886.85/28,206.83
  6. Step 6: Final answer
    x = 12,728.61

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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.