Home / 11,617.56-17,423.10-8,320.86

Finding the Fourth Proportional to 11,617.56, 17,423.10 and 8,320.86

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Solution

The fourth proportional to 11,617.56, 17,423.10 and 8,320.86 is: 12,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,617.56 : 17,423.10 = 8,320.86 : x
  2. Step 2: Convert to fraction form
    11,617.56/17,423.10 = 8,320.86/x
  3. Step 3: Cross multiply
    11,617.56x = 17,423.10 × 8,320.86
  4. Step 4: Simplify right side
    11,617.56x = 144,975,175.87
  5. Step 5: Solve for x
    x = 144,975,175.87/11,617.56
  6. Step 6: Final answer
    x = 12,478.97

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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.