Home / 9,520.79-13,138.70-5,213.86

Finding the Fourth Proportional to 9,520.79, 13,138.70 and 5,213.86

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Solution

The fourth proportional to 9,520.79, 13,138.70 and 5,213.86 is: 7,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.79 : 13,138.70 = 5,213.86 : x
  2. Step 2: Convert to fraction form
    9,520.79/13,138.70 = 5,213.86/x
  3. Step 3: Cross multiply
    9,520.79x = 13,138.70 × 5,213.86
  4. Step 4: Simplify right side
    9,520.79x = 68,503,335.08
  5. Step 5: Solve for x
    x = 68,503,335.08/9,520.79
  6. Step 6: Final answer
    x = 7,195.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.