Home / 9,520.20-14,280.32-5,139.72

Finding the Fourth Proportional to 9,520.20, 14,280.32 and 5,139.72

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Solution

The fourth proportional to 9,520.20, 14,280.32 and 5,139.72 is: 7,709.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.20 : 14,280.32 = 5,139.72 : x
  2. Step 2: Convert to fraction form
    9,520.20/14,280.32 = 5,139.72/x
  3. Step 3: Cross multiply
    9,520.20x = 14,280.32 × 5,139.72
  4. Step 4: Simplify right side
    9,520.20x = 73,396,846.31
  5. Step 5: Solve for x
    x = 73,396,846.31/9,520.20
  6. Step 6: Final answer
    x = 7,709.59

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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.