Home / 28,247.10-42,362.55-8,520.90

Finding the Fourth Proportional to 28,247.10, 42,362.55 and 8,520.90

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Solution

The fourth proportional to 28,247.10, 42,362.55 and 8,520.90 is: 12,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.10 : 42,362.55 = 8,520.90 : x
  2. Step 2: Convert to fraction form
    28,247.10/42,362.55 = 8,520.90/x
  3. Step 3: Cross multiply
    28,247.10x = 42,362.55 × 8,520.90
  4. Step 4: Simplify right side
    28,247.10x = 360,967,052.30
  5. Step 5: Solve for x
    x = 360,967,052.30/28,247.10
  6. Step 6: Final answer
    x = 12,778.91

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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.